Reference meaning
opposable thumb
Last updated
A thumb that can be positioned so that it faces the opposite direction from that of the other fingers, especially the smallest finger, of the same hand.
Source and scope
This definition is reproduced from English Wiktionary, sense en-opposable_thumb-en-noun-9MUkWCdy, under the CC BY-SA 4.0. It has not yet received VocabularyBase editorial review. Read the source and license details.