thumb

US /θʌm/
UK /θʌm/
"thumb" picture
1.

the short, thick first digit of the human hand, set apart from the other four and opposable to them.

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He gave a thumbs-up to show approval.
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She hurt her thumb while playing basketball.
:
digitpollex
1.

to turn over pages with the thumb

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He thumbed through the book, looking for a specific passage.
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She quickly thumbed through the dictionary.
:
flickflipleafbrowse
2.

to hitchhike

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They decided to thumb their way across the country.
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It's dangerous to thumb a ride on this highway.
:
hitchhitchhike
:
well thumbedthumb pianogreen thumbrule of thumbthumbs upthumbs downbe all fingers and thumbs