Definition, Meaning & Synonyms

thumb

noun
/θʌm/
Definition
The short, thick first digit of the human hand, often opposable and capable of grasping.
Examples
  • She gave a thumbs-up to indicate her approval.
  • He accidentally hurt his thumb while hammering a nail.
  • The thumb is essential for holding a pencil correctly.
Meaning
In human anatomy, the thumb is the opposable digit that aids in grasping objects and is crucial for fine motor skills.
Synonyms
  • digit
  • appendage