Definitions
1.nounA leader or head of a group of people, organisation, etc."All firefighters report to the fire chief."
2.nounThe top part of a shield or escutcheon; more specifically, an ordinary consisting of the upper part of the field cut off by a horizontal line, generally occupying the top third.
3.nounThe principal part or top of anything.
4.nounAn informal term of address, sometimes ironic."Hey, chief."
5.verbTo smoke cannabis.
6.adjectivePrimary; principal."Negligence was the chief cause of the disaster."
7.adjectiveIntimate, friendly.