SPRAINING

Verb

spraining

present participle of sprain

Source: Wiktionary

SPRAIN

Sprain, v. t. [imp. & p. p. Sprained; p. pr. & vb. n. Spraining.] Etym: [OF. espreindreto press, to force out, F. épreindre, fr. L. exprimere. See Express, v. t., and cf. Spraints.]

Definition: To weaken, as a joint, ligament, or muscle, by sudden and excessive exertion, as by wrenching; to overstrain, or stretch injuriously, but without luxation; as, to sprain one's ankle.

Sprain, n.

Definition: The act or result of spraining; lameness caused by spraining; as, a bad sprain of the wrist. Sprain fracture (Med.), the separation of a tendon from its point of insertion, with the detachment of a shell of bone to which the tendon is attached.

Source: Webster’s Unabridged Dictionary 1913 Edition