IPA: //ˈmæskər//
KK: /ˈmæskər/
A person who wears a mask, often during a party or event where people dress up in costumes.
At the masquerade ball, each masker wore a unique and colorful mask.
Masker → The word is formed from "mask" (from Old French *masque*, meaning a covering for the face) and "-er" (meaning a person who). A masker is a person who wears a mask, typically for disguise or entertainment.
Think of someone who wears a 'mask' — the '-er' indicates that this person is the one doing the action. A masker is simply someone who puts on a mask.