Of a sound, a voice, a message, etc.: brilliantly clear.

To announce or herald (something) using a clarion (noun sense 1). / (also figuratively) Of a thing: to cause (a place) to echo with a sound like that of a clarion.

Of or related to a clan. / Socially exclusive.

An abrupt, sharp sound, especially one made by two hard objects colliding repetitively; a sound midway between a click and a clunk.

(intransitive) To make a sudden, sharp noise, or succession of noises; to click. / (transitive) To cause to make a sudden, sharp noise, or succession of noises; to click.

(nautical, transitive) To temporarily add something to an existing part, especially to add an additional sail to take advantage of a fair wind. / (transitive) To encourage by (or as if by) applauding.

One of the numbered classes in a standard system that categorizes routes, bridges, or rafts according to the load they can carry. Vehicles are also assigned class number(s) indicating the minimum class of route, bridge, or raft they are authorized to use.

(role-playing games) One of a number of pre-determined groups into which characters in role-playing games are grouped, based on the focus of their skills.

(film) A device used in film production, having hinged boards that are brought together with a clap, used to synchronize picture and sound at the start of each take of a motion picture or other video production.

Synonym of class action