endpin

[ end-pin ]
/ ˈɛndˌpɪn /

noun

the adjustable thin leg at the bottom of a cello or double bass.
Also called tail-spike [teyl-spahyk] /ˈteɪlˌspaɪk/.

British Dictionary definitions for end pin

end pin

noun

music the adjustable metal spike attached to the bottom of a cello, double bass, etc, that supports it while it is being played