first officer 
noun
1The first mate on a merchant ship.In March 2001, the first officer of the cruise ship Caledonian Star saw a wave that chilled his soul....
- The ship's first officer was asleep on his hammock, clutching something close to his chest.
- His dad, Tom, now in his eighties, started off in the Navy as an able-bodied seaman, but worked his way up to become a first officer in the Admiralty.
1.1The second in command to the captain on an aircraft.Plans call for hiring three captains, two first officers and three flight attendants per aircraft....
- According to post-accident interviews, neither the captain nor the first officer of those two flight legs noticed anything unusual about the airplane.
- Later he worked for Pan Am as a first officer, flight engineer and navigator.
- pick on
- pick one's feet up
- pickpocket
- pickpocketry
- pickpole
- pickproof
- pickpurse
- Pick's body
- Pick's disease
- pickshaft
- picksome
- pick someone's brains (or brain)
- pick someone's pockets
- pick someone/thing off
- pick someone/thing out
- pick someone/thing to pieces (or apart)
- pick someone up
- pick something clean
- pick something out of a hat
- pick something over (or pick through)
- pick something up
- Pick's syndrome
- pickthank
- Pickt-hatch
- picktooth