An Etymological Dictionary of Astronomy and Astrophysics

Any of the terminal members of the hand, especially one other than the thumb (Dictionary.com).

Etymology (EN): M.E., from O.E. fingor, cognate with Ger. Finger, Du. vinger,
O.N. fingr, Goth. figgrs.

Etymology (PE): Angošt, variants angol, angul (also angal “loop”);
Mid.Pers. angust; Av. angušta- “toe,”
ank- “curved, crooked;” cf. Skt. angustha- “thumb,” angula- “finger,” ankah “hook, bent;” Gk. angkon “elbow,” angkura “anchor;” L. angulum “corner;” Lith. anka “loop;” O.E. ancleo “ankle;” O.H.G. ango “hook;” PIE *ang-/*ank- “to bend”.