plural of concentration-time curve

(obsolete) A dashing swordsman. / (dated) A dashing youth. / (colloquial, dated) A gay person, or person displaying homosexual qualities.

plural of extra cover

(intransitive) To yield to an overpowering force or overwhelming desire. / (intransitive) To give up, or give in. / (intransitive) To die. / (transitive) To overwhelm or bring down.