A deep blue pigment derived from cobalt; zaffre.

Of the color of the pigment zaffre.

(US, military) Initialism of contingency operating base. / (military) Acronym of chief of boat. / close of business; the end of the business day / Coordination of Benefits / Chairman of the Board

Clive's Original Band, band started by Clive Palmer after he left The Incredible String Band. / (sports) Abbreviation of Cobourg.

The shape, outline, or boundary of a coast. (The term coastline is generally used to describe the approximate boundaries at relatively large spatial scales.)

A temporary group or union of organizations, usually formed for a particular advantage. / (rare) The collective noun for a group of cheetahs.

A person who repairs, and sometimes makes, shoes.

(US, alcoholic beverages) An (iced) alcoholic drink containing spirit or wine, with lemon juice and sugar.

A roadworker who lays cobbles.

The shiny, hard seed of the horse chestnut tree (Aesculus hippocastanum), especially when used in the game of the same name (sense 1.2); a conker, a horse chestnut.