Meaning

noun (sports) someone in charge of training an athlete or a team

noun a person who gives private instruction (as in singing, acting, etc.)

noun a railcar where passengers ride

originBorrowed from Middle French coche, from German Kutsche, from Hungarian kocsi. According to historians, the coach was named after the small Hungarian town of Kocs, which made a livelihood from cart building and transport between Vienna and Budapest. The meaning “instructor/trainer” is from Oxford University slang (c. 1830) for a “tutor” who “carries” one through an exam; the athletic sense is from…

Etymology from Wiktionary, CC BY-SA 3.0