Is it ensure, insure, or assure?
Old English wund "hurt, injury," from Proto-Germanic *wundaz (cf. Old Saxon wunda, Old Norse und, Old Frisian wunde, Old High German wunta, German wunde "wound"), perhaps from PIE root *wen- "to beat, wound."
Old English wundian, from the source of wound (n.). Cognate with Old Frisian wundia, Middle Dutch and Dutch wonden, Old High German wunton, German verwunden, Gothic gawundon. Figurative use from c.1200. Related: Wounded; wounding.
Injury to a part or tissue of the body, especially one caused by physical trauma and characterized by tearing, cutting, piercing, or breaking of the tissue.
Worth what it costs to keep: anyone worth their salt will be kept
[fr wire as conducting an electrical charge or stimulus, or as used for binding; wired up is recorded as a US term for ''irritated, provoked'' in the late 1800s and may be related to the sense ''anxious, nervous'']