bas ‧ soon /bəˈsuːn/ BrE AmE noun [countable]
[ Date: 1700-1800 ; Language: French ; Origin: basson , from Italian bassone , from basso , from Medieval Latin bassus ; ⇨ ↑ base 3 ]
a musical instrument like a very long wooden tube, that produces a low sound. You hold it upright and play it by blowing into a thin curved metal pipe.
—bassoonist noun [countable]