| block grant | a grant of federal money to state and local governments to support social welfare programs, block grants reduce federal responsibility for social welfare |
| block vote | a vote proportional in magnitude to the number of people that a delegate represents |
blocking
block | the act of obstructing or deflecting someone's movements |
| trap block | (American football) an illegal block |
| acoustic | a remedy for hearing loss or deafness |
acoustic delay line
sonic delay line | a delay line based on the time of propagation of sound waves |
| acoustic device | a device for amplifying or transmitting sound |
| acoustic guitar | sound is not amplified by electrical means |
| acoustic modem | a modem that converts electrical signals to telephone tones and back again |
| acoustic storage | a storage device consisting of acoustic delay lines |
auction block
block | a platform from which an auctioneer sells, they put their paintings on the block |
| block | a solid piece of something (usually having flat rectangular sides), the pyramids were built with large stone blocks |
| block | housing in a large building that is divided into separate units, there is a block of classrooms in the west wing |
blockage
block closure
occlusion
stop stoppage | an obstruction in a pipe or tube, we had to call a plumber to clear out the blockage in the drainpipe |
| block and tackle | pulley blocks with associated rope or cable |
| block diagram | a diagram showing the interconnections between the components of system (especially an electronic system) |
| block plane | a small plane used on end grains of wood |
bollock
bullock block | a pulley-block at the head of a topmast |
| building block | a block of material used in construction work |
butcher board
butcher block | a thick wooden slab formed by bonding together thick laminated strips of unpainted hardwood |
| chopping block | a steady wooden block on which food can be cut or diced or wood can be split |
cinder block
clinker block
breeze block | a light concrete building block made with cinder aggregate, cinder blocks are called breeze blocks in Britain |
cube
square block | a block in the (approximate) shape of a cube |
damper block
piano damper | damper consisting of a small felted block that drops onto a piano string to stop its vibration |
| electro-acoustic transducer | a transducer that converts electrical to acoustic energy or vice versa |
engine block
cylinder block
block | a metal casting containing the cylinders and cooling ducts of an engine, the engine had to be replaced because the block was cracked |
gramophone
acoustic gramophone | an antique record player, the sound of the vibrating needle is amplified acoustically |
highise
tower block | tower consisting of a multistoried building of offices or apartments, `tower block' is the British term for `highise' |
ingot
metal bar
block of metal | metal that is cast in the shape of a block for convenient handling |
linecut
line block
line engraving | engraving consisting of a block that has been etched or engraved |
office building
office block | a building containing offices where work is done |
| pillow block | a cast-iron or steel block for supporting a journal or bearing |
pulley
pulley-block
pulley block
block | a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope |
| ship-towed longange acoustic detection system | a shipboard system consisting of an acoustic detection system that is towed behind the ship |
sketchbook
sketch block
sketch pad | a book containing sheets of paper on which sketches can be drawn |
| snatch block | a pulley-block that can be opened to receive the bight of a rope |
| starting block | block providing bracing for a runner's feet at start of a race |
| stumbling block | any obstacle or impediment |
surface gauge
surface gage
scribing block | gauge consisting of a scriber mounted on an adjustable stand, used to test the accuracy of plane surfaces |
| swage block | an iron block cut with holes and grooves to assist in cold working metal |
woodcut
wood block
wood engraving | engraving consisting of a block of wood with a design cut into it, used to make prints |
acoustic power
sound pressure level | the physical intensity of sound |
| acoustic radiation pressure | (acoustics) the pressure exerted on a surface normal to the direction of propagation of a sound wave |
auditory meatus
acoustic meatus
ear canal
auditory canal
external auditory canal | either of the passages in the outer ear from the auricle to the tympanic membrane |
acoustic nerve
auditory nerve
vestibulocochlear nerve
nervus vestibulocochlearis
eighth cranial nerve | a composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochlea |
block
mental block | an inability to remember or think of something you normally can do, often caused by emotional tension, I knew his name perfectly well but I had a temporary block |
| writer's block | an inability to write, he had writer's block, the words wouldn't come |
block letter
block capital | a plain hand-drawn letter |
| acoustic buoy | a buoy that can be heard (at night) |
sound wave
acoustic wave | (acoustics) a wave that transmits sound |