english
1
general::
Phrase(s): on board 1. Lit. aboard (on or in) a ship, bus, airplane, etc. • Is there a doctor on board? We have a sick passenger. • When everyone is on board, we will leave. 2. Fig. employed by someone; working with someone. • Our company has a computer specialist on board to advise us about the latest technology. • Welcome to the company, Tom. We’re all glad you’re on board now.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Joining in or participating, as in The department head addressed the new employees, saying ‘‘Welcome on board," or The opera company has a new vocal coach on board to help the soloists. This expression alludes to being on or in a vessel, airplane, or other vehicle. [Colloquial; second half of 1900s]
American Heritage Idioms