sprain
Concise Oxford English Dictionary © 2008 Oxford University Press:
sprain/spreɪn/
▶verb wrench the ligaments of (an ankle, wrist, or other joint) violently so as to cause pain and swelling but not dislocation. ▶noun the result of such a wrench.
– origin C17: of unknown origin.
'sprain' also found in these Oxford entries:

