Webster's Revised Unabridged Dictionary · 1913

Sprain

Sprain (sprān) , transitive verb

[Old French espreindreto press, to force out, French épreindre, from Latin exprimere. See Express, transitive verb, and compare Spraints.]

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 , noun

The act or result of spraining; lameness caused by spraining; as, a bad sprain of the wrist.
Collocations (1)
Sprain fracture (Medicine) , the separation of a tendon from its point of insertion, with the detachment of a shell of bone to which the tendon is attached.