flap has definitions from the fields of transportation,zoology,physics
1
[ verb ] move in a wavy pattern or with a rising and falling motion

Synonyms

wave roll undulate

Examples

"The curtains undulated" "the waves rolled towards the beach"

Used in print

(Stephen Longstreet, Eagles Where I Walk....)

- flapped as it ran .

2
[ noun ] any broad thin and limber covering attached at one edge; hangs loose or projects freely

Examples

"he wrote on the flap of the envelope"

3
[ verb ] move noisily

Examples

"flags flapped in the strong wind"

Used in print

(Mignon G. Eberhart, The Cup, the Blade...)

She went downstairs and received another curious shock , for when Glendora flapped into the dining_room in her homemade moccasins , Sarah asked her when she had brought coffee to her room and Glendora said she had n't .

Glendora flapped away .

Related terms

beat

4
[ verb ] move with a thrashing motion

Synonyms

beat

Examples

"The bird flapped its wings" "The eagle beat its wings and soared high into the sky"

Related terms

move clap bate beat beat

5
[ noun ] an excited state of agitation

Synonyms

fuss pother tizzy dither

Examples

"he was in a dither" "there was a terrible flap about the theft"

Related terms

agitation dither

6
[ noun ] (physics) the motion made by flapping up and down

Related terms

wave undulate flicker beat

7
[ verb ] pronounce with a flap, of alveolar sounds

Related terms

pronounce

8
[ verb ] make a fuss; be agitated

Synonyms

pother dither

Related terms

fuss dither

9
[ verb ] move with a flapping motion

Synonyms

beat

Examples

"The bird's wings were flapping"

Related terms

move clap flail beat

10
[ noun ] (zoology) a movable piece of tissue partly connected to the body
11
[ noun ] (transportation) a movable airfoil that is part of an aircraft wing; used to increase lift or drag

Synonyms

flaps

Related terms

airfoil landing_flap wing

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