MINIMUS
minimus
(noun) the fifth digit; the little finger or little toe
Source: WordNet® 3.1
Etymology
Noun
minimus (plural minimi)
(obsolete) A being of the smallest size.
(dated) The youngest pupil in a school having a particular surname.
(anatomy) The little finger; the fifth digit, or that corresponding to it, in either the manus or pes.
Source: Wiktionary
Min"i*mus, n.; pl. Minimi. Etym: [L. See Minim.]
1. A being of the smallest size. [Obs.] Shak.
2. (Anat.)
Definition: The little finger; the fifth digit, or that corresponding to
it, in either the manus or pes.
Source: Webster’s Unabridged Dictionary 1913 Edition