[call upon] See: [CALL ON].

[calling down] also [dressing down] {n. phr.}, {informal} A scolding; reprimand. […]

[calm down] {v. phr.} To become quiet; relax. * /"Calm down, […]

[came natural] See: [COME EASY].

[camel] See: [STRAW THAT BROKE THE CAMEL'S BACK] at [LAST STRAW].

[camp] See: [BREAK CAMP].

[camp follower] {n.} 1. A man or woman who goes with […]

[camp out] {v.} To live, cook, and sleep out of doors […]

[campaign] See: [WHISPERING CAMPAIGN].

[can] See: [AS BEST ONE CAN], [CATCH AS CATCH CAN].