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ball of the thumb. In DICTIOUS you will not only get to know all the dictionary meanings for the word
ball of the thumb, but we will also tell you about its etymology, its characteristics and you will know how to say
ball of the thumb in singular and plural. Everything you need to know about the word
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English
Noun
ball of the thumb (plural balls of the thumb)
- (anatomy, informal) The fleshy portion, opposite the nail, of the first segment (first phalange) of the human thumb.
- (anatomy) The most fleshy portion of the palm of the human hand, located adjacent to the second joint of the thumb: the thenar eminence.