thumb
thumb
(thŭm) noun
1.
a. The short thick digit of the human hand, next to the index finger and opposable to each of the other four digits. b. A corresponding digit in other animals, especially primates. Also called pollex.
2. The part of a glove or mitten that covers the thumb.
3. Architecture. An ovolo.
verb
thumbed, thumbing, thumbs
verb
, transitive
1.
To scan (written matter) by turning over pages with or as if with the thumb.
2.
To disarrange, soil, or wear by careless or frequent handling.
3.
Informal. To solicit (a ride) from a passing vehicle by signaling with the thumb.
verb
, intransitive
1.
To scan written matter by turning over pages with or as if with the thumb: thumbed through the latest issue of the magazine.
2.
Informal. To hitchhike.
idiom.
all thumbs
Lacking physical coordination, skill, or grace; clumsy.
thumb (one's) nose
To express scorn or ridicule by or as if by placing the thumb on the nose and wiggling the fingers.
thumbs down
An expression of rejection, refusal, or disapproval.
thumbs up
An expression of approval, success, or hope.
under (one's) thumb
Under the control of someone; subordinate to.
[Middle English, from Old English thūma.]