Definition of arm noun from the Oxford Advanced American Dictionary

      

    arm

     noun
    noun
    NAmE//ɑrm//
     
    see also arms
     
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    part of body
  1. 1either of the two long parts that stick out from the top of the body and connect the shoulders to the hands He escaped with only a broken arm. She threw her arms around his neck. The officer grabbed him by the arm (= grabbed his arm). She touched him gently on the arm. He held the dirty rag at arm's length (= as far away from his body as possible). They walked along arm in arm (= with the arm of one person linked with the arm of the other). She cradled the child in her arms. They fell asleep in each other's arms (= holding each other). He was carrying a number of files under his arm (= between his arm and his body). He walked in with a tall blond lady on his arm (= next to him and holding his arm). Topic CollocationsPhysical AppearanceA person may be described as having:eyes (bright) blue/green/(dark/light) brown/hazel eyes deep-set/sunken/bulging/protruding eyes small/beady/sparkling/twinkling/shifty eyes piercing/penetrating/steely eyes bloodshot/watery/puffy eyes bushy/thick/dark/raised/arched eyebrows long/dark/thick/curly/false eyelashes/lashesface a flat/bulbous/pointed/sharp/snub nose a straight/a pointy/a Roman/an aquiline nose full/thick/thin/pouty lips dry/chapped/cracked lips flushed/rosy/red/ruddy/pale cheeks soft/chubby/sunken cheeks white/perfect/crooked/protruding teeth a large/high/broad/wide forehead a strong/weak/pointed/double chin a long/full/bushy/wispy beard a full/thin goatee a long/thin/bushy/droopy/handlebar/pencil mustachehair and skin pale/fair/olive/dark/tanned skin dry/oily/smooth/rough/leathery/wrinkled skin a dark/pale/light/sallow/ruddy/olive/swarthy/clear complexion deep/fine/small/facial wrinkles blonde/blond/fair/(light/dark) brown/(jet-)black/auburn/red/ginger/gray hair straight/curly/wavy/frizzy/spiky hair thick/thin/fine/bushy/thinning hair dyed/bleached/soft/silky/dry/greasy/shiny hair long/short/shoulder-length/cropped hair a bald/balding/shaved head a receding hairline a bald patch/spot a side/center partbody a long/short/thick/slender/ (disapproving) scrawny neck broad/narrow/sloping/rounded/hunched shoulders a bare/broad/muscular/small/large chest a flat/round/swollen/bulging stomach a small/tiny/narrow/slim/slender/28-inch waist big/wide/narrow/slim hips a straight/bent/arched/broad/hairy back thin/slender/muscular arms big/large/small/manicured/calloused/gloved hands long/short/fat/slender/delicate/bony fingers long/muscular/hairy/shapely/ (informal) (often disapproving) skinny/spindly legs muscular/chubby/ (informal) (disapproving) flabby thighs/calves big/little/small/dainty/wide/narrow/bare feet a good/slim/slender/hourglass figure be of slim/medium/average/large/athletic/stocky build
  2. of clothing
  3. 2the part of a piece of clothing that covers the arm synonym sleeve The arms will need shortening.
  4. of chair
  5. 3 the part of a chair, etc. on which you rest your arms She perched on the arm of his chair.
  6. of machinery
  7. 4 a long narrow part of an object or a piece of machinery, especially one that moves, for example a crane
  8. of water/land
  9. 5a long narrow piece of water or land that is joined to a larger area A bridge spans the arm of the river.
  10. of organization
  11. 6[usually singular] arm (of something) a section of a large organization that deals with one particular activity synonym wing the research arm of the company
  12. Idioms
    cost/pay an arm and a leg(informal)
     
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    to cost/pay a lot of money
    keep somebody at arm's length
     
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    to avoid having a close relationship with someone He keeps all his clients at arm's length.
See the Oxford Advanced Learner's Dictionary entry: arm