(obsolete) Set; placed.

(mainly UK) Alternative spelling of gray-collar

Alternative form of green-collar

plural of tax collector

One who has the responsibility for collecting taxes.

A dog's collar which tightens itself so as to choke the dog, when it pulls the leash. Used especially for training. ᵂ

A mysterious and widespread phenomenon of the sudden disappearance of colonies of bees.

Energy in an interaction that is not supplied by the initiator of the interaction.

(transport) A collision where the front ends of two vehicles (such as ships, trains, cars, planes, etc.) hit each other, as opposed to a side-collision or rear-end collision.

plural of collector