/spin"it/ , n.
1. a small upright piano.
2. a small, square piano.
3. any of various small harpsichords.
4. Also called spinet organ . a small electric organ.
[ 1655-65; aph. var. of obs. espinette spinetta, prob. equiv. to spin ( a ) thorn (see SPINE) + -etta dim. suffix; the existence of an instrument-maker named Spinetti is unverified ]