Meaning of ABOARD in English

ABOARD

I. əˈ- adverb

Etymology: Middle English abord, from a- (I) + bord board, side of a ship — more at board

1.

a. : on board : on, onto, or within a ship, a railway car, or a passenger vehicle

all aboard

climb aboard

b. : astride

swing aboard

sling a saddle aboard

2. : alongside

another ship close aboard

II. preposition

Etymology: Middle English abord, from abord, adverb

: on board

go aboard ship

aboard a horse

III. adverb (or adjective)

1. : in or into a group, association, or organization

her second promotion since coming aboard

2. baseball : on base

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.