IPA: /ˌklærɪˈnɛtɪst/
KK: /klærɪˈnɛtɪst/
A person who plays the clarinet, a woodwind musical instrument.
The clarinettist performed beautifully at the concert last night.
Clarinettist → The word is formed from "clarinet" (from French *clarinette*, meaning a small clarion or trumpet) and the suffix "-ist" (meaning one who practices or is concerned with). A clarinettist is one who plays the clarinet.
Think of a 'clarinet' as a type of musical instrument, and the '-ist' means a person who plays it. So, a clarinettist is simply someone who plays the clarinet.