letter bomb
parcel bomb
package bomb | a thin explosive device inside an envelope or package and detonated when opened |
| letter case | case for carrying letters |
letter opener
paper knife
paperknife | dull knife used to cut open the envelopes in which letters are mailed or to slit uncut pages of books |
mailbox
letter box | a private box for delivery of mail |
postbox
mailbox letter box | public box for deposit of mail |
Post-Office box
PO Box
POB
call box letter box | a numbered compartment in a post office where mail is put to be called for |
code of conduct
code of behavior | a set of conventional principles and expectations that are considered binding on any person who is a member of a particular group |
stationery
letter paper | paper cut to an appropriate size for writing letters, usually with matching envelopes |
| letter telegram | a cheaper form of telegram that is sent abroad for delivery the next day |
four-letter word
four-letter Anglo-Saxon word | any of several short English words (often having letters) generally regarded as obscene or offensive |
| code | a coding system used for transmitting messages requiring brevity or secrecy |
access
access code | a code (a series of characters or digits) that must be entered in some way (typed or dialed or spoken) to get the use of something (a telephone line or a computer or a local area network etc.) |
| area code | a number usually of digits assigned to a telephone area as in the United States and Canada |
bar code
Universal Product Code | code consisting of a series of vertical bars of variable width that are scanned by a laser, printed on consumer product packages to identify the item for a computer that provides the price and registers inventory information |
| color code | system using colors to designate classifications |
cipher
cypher
cryptograph secret code | a secret method of writing |
Morse
Morse code
international Morse code | a telegraph code in which letters and numbers are represented by strings of dots and dashes (short and long signals) |
ZIP code
ZIP
postcode
postal code | a code of letters and digits added to a postal address to aid in the sorting of mail |
| code computer code | (computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions |
American Standard Code for Information Interchange
ASCII | (computer science) a code for information exchange between computers made by different companies, a string of binary digits represents each character, used in most microcomputers |
| binary code | code using a string of binary digits to represent characters |
error correction code
ECC | (telecommunication) a coding system that incorporates extra parity bits in order to detect errors |
machine code
machine language | a set of instructions coded so that the computer can use it directly without further translation |
| object code | the machine-language output of a compiler that is ready for execution on a particular computer |
operation code
order code | the portion of a set of operation descriptions that specifies the operation to be performed, the set of operations in a computer |
| source code | program instructions written as an ASCII text file, must be translated by a compiler or interpreter or assembler into the object code for a particular computer before execution |
alphabetic writing
alphabetic script | a writing system based on alphabetic characters |
Letter of Jeremiah
Epistle of Jeremiah | an Apocryphal book consisting of a letter ascribed to Jeremiah to the Jews in exile in Babylon warning them against idolatry |
Roman law
Justinian code
civil law jus civile | the legal code of ancient Rome, codified under Justinian, the basis for many modern systems of civil law |
letter of marque
letters of marque
letter of mark and reprisal | a license to a private citizen to seize property of another nation |
logic bomb
slag code | a set of instructions inserted into a program that are designed to execute (or `explode') if a particular condition is satisfied, when exploded it may delete or corrupt data, or print a spurious message, or have other harmful effects, a disgruntled employee planted a logic bomb |
| night letter | a cheaper form of telegram sent for delivery the next day |
letter
missive | a written message addressed to a person or organization, mailed an indignant letter to the editor |
| business letter | a letter dealing with business |
covering letter
cover letter | a letter sent along with other documents to provide additional information |
| crank letter | a hostile (usually anonymous) letter |
encyclical
encyclical letter | a letter from the pope sent to all Roman Catholic bishops throughout the world |
| fan letter | a letter that is a piece of fan mail |
| personal letter | a letter dealing with personal affairs |
| form letter | a letter that is printed in multiple copies and mailed to a list of recipients |
| open letter | a letter of protest, addressed to one person but intended for the general public |
| chain letter | a letter that is sent successively to several people |
airmail letter
air letter
aerogram
aerogramme | a letter sent by air mail |
note short letter
line billet | a short personal letter, drop me a line when you get there |
love letter
billet doux | a personal letter to a loved one expressing affection |
dead letter
dead mail | mail that can neither be delivered nor returned |
| letter of intent | any letter expressing an intention to take (or forgo) some action |
ethic
ethical code | a system of principles governing morality and acceptable conduct |
| code codification | a set of rules or principles or laws (especially written ones) |
| legal code | a code of laws adopted by a state or nation, a code of laws |