Chief

1. A leader or head of a group of people, organisation, etc.

   All firefighters report to the fire chief.

2. The 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. The principal part or top of anything.
4. An informal term of address, sometimes ironic.

   Hey, chief.

verb

To smoke cannabis.

1. Primary; principal.

   Negligence was the chief cause of the disaster.

2. Intimate, friendly.