[clamp down] {v.}, {informal} To put on strict controls; enforce rules […]

[class] See: [HIGH-CLASS], [SECOND CLASS].

[clay] See: [FEET OF CLAY].

[clay pigeon] {n.}, {slang}, {informal} 1. A popular target at practice […]

[clean] See: [COME CLEAN], [KEEP ONE'S NOSE CLEAN], [MAKE A CLEAN […]

[clean bill of health] {n. phr.} 1. A certificate that a […]

[clean break] {n. phr.} A complete separation. * /Tom made a […]

[clean hands] {n. phr.}, {slang} Freedom from guilt or dishonesty; innocence. […]

[clean out] {v.} 1. {slang} To take everything from; empty; strip. […]

[clean slate] {n. phr.} A record of nothing but good conduct, […]