指

posing and moving the fingers as an art form; finger-tutting

finger hole (on a flute, bowling ball, etc.)

Internet slang; Derogatory

person who posts unwanted advice in the comments section or chat of an online video or live stream (esp. Let's Play videos); backseater

signboard; notice board

Linguistics

demonstrative

brief moment; twinkling of an eye; instant

indexation

ring finger

signpost; regulation sign

Chemistry

indicator

trigger finger; flexor tendinitis

indicator

Medicine

hammer toe; hammer finger

possum; phalanger

target

exponent portion; characteristic (e.g. in floating-point representation)

finger language; signing; sign language

black-legged kittiwake (Rissa tridactyla)

hand print

end game position

Linguistics

copula (esp. in Korean)

Astronomy; Geology

colour index; color index

Grammar

diminutive

aye-aye (Daubentonia madagascariensis)