aboard /əˈbɔ:d, (AmE.) əˈbord/ I. adv. 上船(车、飞机等): All aboard! 各位上船(车)! (通知乘客即将开船或开车) It’s time to go aboard. 该上船(车、机等)了。Welcome aboard! 欢迎上船(车、飞机等)! ‖II. prep. 在轮船(火车或飞机)上；上(车船等): aboard a ship (a train)在船(火车)上 They went aboard the ship. 他们上了船。