sprain -- (a painful injury to a joint caused by a sudden wrenching of its ligaments)
Overview of verb sprain
The verb sprain has 1 sense
twist, sprain, wrench, turn, wrick, rick -- (twist suddenly so as to sprain; "wrench one's ankle"; "The wrestler twisted his shoulder"; "the hikers sprained their ankles when they fell"; "I turned my ankle and couldn't walk for several days")