IPA: /ˈtʃɛlɪst/
KK: /ˈtʃɛlɪst/
A person who plays the cello, a string instrument that is larger than a violin and has a deep sound.
The cellist performed beautifully at the concert last night.
Cellist → It is formed from "cello" (short for "violoncello", from Italian, meaning small violin) and "-ist" (meaning one who practices or is concerned with). A cellist is one who plays the cello.
Think of someone who plays a 'small violin' (the cello) — the '-ist' means a person who practices that art.