the.com/flap

the smallest motion with a flair for dramatic exits and aerodynamic destiny

means To move or wave something back and forth, especially loosely, like a bird's wings or a sheet in the wind; also a state of agitated fuss.

from An imitative word, born from the very sound it names — that soft, slapping beat of wings or cloth catching air. English has had it since the Middle Ages, and like 'flop,' 'flip,' and 'slap,' it belongs to a family of words whose meaning lives in their noise. The 'agitated fuss' sense ('in a flap') is later and colloquial, as if panic itself were just frantic flapping.

butterfly effect
a wingbeat famously blamed for distant tornadoes
plane control
flaps let jets land slower without falling
old slang
a flap meant a state of panic
door duty
cat flaps gave pets their own front door
for instance

hummingbird wing flap — can flap up to 80 times per second, fastest of any bird

aircraft wing flap — movable surface on airplane wings that increases lift during takeoff and landing

flapper dress 1920s — loose-fitting women's dress with dropped waistline, symbol of 1920s youth culture

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