KOS
- a land measure in India [n KOS]
- knockout in boxing
- to knock unconscious, esp. in a boxing match; knock out
- island Greece in the Dodecanese area 111 square miles (289 square kilometers)
- (in India) unit of land distance of various lengths from 1 to 3 mi. (1.6 to 4.8 km)
- a measure of distance in India, also COSS, KOSS [n KOSES or KOSSES]