| trap block | (American football) an illegal block |
mousetrap
trap play | (American football) a play in which a defensive player is allowed to cross the line of scrimmage and then blocked off as the runner goes through the place the lineman vacated |
ambush
ambuscade
lying in wait
trap | the act of concealing yourself and lying in wait to attack by surprise |
| trap-door spider | American spider that constructs a silk-lined nest with a hinged lid |
air filter
air cleaner | a filter that removes dust from the air that passes through it |
bunker
sand trap
trap | a hazard on a golf course |
| coffee filter | filter (usually of paper) that passes the coffee and retains the coffee grounds |
| filter | device that removes something from whatever passes through it |
| filter | an electrical device that alters the frequency spectrum of signals passing through it |
| filter bed | filter consisting of a layer of sand or gravel for filtering water |
| filter tip | an air filter on the end of a cigarette, contains material that filters the smoke |
| filter-tipped cigarette | a cigarette with a filter tip |
| fuel filter | a filter in the fuel line that screens out dirt and rust particles from the fuel |
| high-pass filter | a filter that passes frequencies above a certain value and attenuates frequencies below that value |
land mine
ground-emplaced mine
booby trap | an explosive mine hidden underground, explodes when stepped on or driven over |
light filter
diffusing screen | a transparent filter that reduces the light (or some wavelengths of the light) passing through it |
| lint | cotton or linen fabric with the nap raised on one side, used to dress wounds |
| low-pass filter | a filter that passes frequencies below a certain value and attenuates frequencies above that value |
| oil filter | a filter that removes impurities from the oil used to lubricate an internalombustion engine |
| steel trap | a trap made of steel with a strong spring and sharp toothlike projections to hold the prey |
suntrap
solar trap | a terrace or garden oriented to take advantage of the sun while protected from cold winds |
| trap | a device in which something (usually an animal) can be caught and penned |
| trap | a light two-wheeled carriage |
| trap | a device to hurl clay pigeons into the air for trapshooters |
| trap | drain consisting of a U-shaped section of drainpipe that holds liquid and so prevents a return flow of sewer gas |
| trap-and-drain auger | a plumber's snake for clearing a trap and drain |
| trap door | a hinged or sliding door in a floor or ceiling |
| water filter | a filter to remove impurities from the water supply |
trap
cakehole
hole
maw
yap
gob | informal terms for the mouth |
| steel trap | an acute intelligence (an analogy based on the well-known sharpness of steel traps), he's as sharp as a steel trap, a mind like a steel trap |
pitfall
booby trap | an unforeseen or unexpected or surprising difficulty |
trap
snare | something (often something deceptively attractive) that catches you unawares, the exam was full of trap questions, it was all a snare and delusion |
| iron trap | a trap from which there is no escape |
| speed trap | a trap arranged on a roadway for catching speeders |
| trap line | a line or series of traps |
| poverty trap | a situation in which an increase in income results in a loss of benefits so that you are no better off |
| filter paper | a porous unsized paper used for filtering |
| lint | fine ravellings of cotton or linen fibers |
trap pin immobilize
immobilise | to hold fast or prevent from moving, The child was pinned under the fallen tree |
percolate
sink in
permeate
filter | pass through, Water permeates sand easily |
filter
filtrate
strain
separate out
filter out | remove by passing through a filter, filter out the impurities |
trap
entrap
snare
ensnare
trammel | catch in or as if in a trap, The men trap foxes |
| trap | hold or catch as if in a trap, The gaps between the teeth trap food particles |
trickle
dribble
filter | run or flow slowly, as in drops or in an unsteady stream, water trickled onto the lawn from the broken hose, reports began to dribble in |
trap
pin down | place in a confining or embarrassing position, He was trapped in a difficult situation |
| filter-tipped | of a cigar or cigarette, having a tip designed to filter the smoke, filter-tipped cigarettes |