andrew: i heard you joined the crew team, but you're only 4'9, how is that possible?  becky: i am the coxswain
in crew, the small person who controls every action of rowers
"andrew: i heard you joined the crew team, but you're only 4'9, how is that possible?  becky: i am the coxswain" What is the definition of "coxswain"?