noun, U.S. Military.
an Army, Air Force, or Marine officer of the lowest commissioned rank.
Compare ensign (def 4).
an officer holding the lowest commissioned rank in the armed forces of certain nations
adverb 1. in the second place; second. adverb 1. another word for second, usually used to precede the second item in a list of topics
- Second man
noun 1. a person who assists the driver in crewing a locomotive
noun 1. the officer of a merchant vessel next in command beneath the first mate. noun 1. the next in command of a merchant vessel after the first mate Also called second officer
noun, British. 1. the transfer of a military officer or corporate executive to another post for temporary duty. noun 1. (Brit) a temporary transfer to another job or post within the same organization