фишка

Etymology
. Probably of southern origin, because the northern dialectal form is.

May also be from or even English, adding Russian ending. It would explain the sound /ʂ/.

Noun

 * 1) fish

Etymology
From.

Noun

 * 1)  piece, counter, dib, marker, peg, token
 * 2)  invention, contrivance, device, (funny or special) idea
 * 3)  feature, peculiarity

Synonyms

 * playing piece, especially chess
 * invention, idea
 * , feature
 * feature, colloquial