Medical Dictionary
3 ENTRIES FOUND:

thumb

noun \ˈthəm\

Medical Definition of THUMB

:  the short and thick first or most preaxial digit of the human hand that differs from the other fingers in having only two phalanges, in having greater freedom of movement, and in being opposable to the other fingers

Illustration of THUMB

May 03, 2015
predicate Hear it
to base (something) on something else
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