IPA: /kəˈlɛktər/
KK: /kəˈlɛktər/
A person who gathers or accumulates items, such as stamps, coins, or other collectibles.
He is a passionate collector of rare coins from around the world.
Collector → It is formed from "collect" (from Latin "colligere", meaning to gather together) and "-or" (meaning a person who). A collector is a person who gathers or accumulates items, often as a hobby or for investment.
Think of someone who 'gathers together' ('collect') various items — that's why a collector is a person who collects.