RhymeZone: liveaboard definitions

Definitions of liveaboard:

adjective: Of a boat: designed or modified to allow people to live on board.
adjective: Of a person: living on board a boat.
noun: (US) A person who lives on a boat.
noun: (US) A boat designed or modified to allow people to live on board, compared to similar boats which do not have this feature.

(Definitions from Wiktionary)