a sailor or group of sailors stationed on the poop to attend to the aft sails
2.
the members of the crew responsible for strategic decisions about the sailing and navigation of a boat
afterguard in American English
(ˈæftərˌɡɑːrd, ˈɑːf-)
noun Nautical slang
1.
the owner of a yacht or his or her guests
2.
the officers quartered in the stern of a vessel
Word origin
[1820–30; after + guard]This word is first recorded in the period 1820–30. Other words that entered Englishat around the same time include: blouse, boomerang, morphology, phonetic, tetrapod