man-of-war

Short definition from Wiktionary

Noun

1. 1
   A man whose occupation is fighting in wars; a soldier, a warrior.
2. 2
   A powerful armed naval vessel, primarily one armed with cannon and propelled by sails; a warship.
3. 3
   A powerful armed naval vessel, primarily one armed with cannon and propelled by sails; a warship: In full man-of-war's-man: a sailor serving on board an armed naval vessel.
4. 4
   Senses relating to animals: Ellipsis of man-of-war bird or (obsolete) man-of-war hawk (“any of a number of seabirds, especially one which attacks other seabirds to take their food”).
5. 5
   Ellipsis of man-of-war bird or (obsolete) man-of-war hawk (“any of a number of seabirds, especially one which attacks other seabirds to take their food”): A frigatebird (family Fregatidae), especially the magnificent frigatebird (Fregata magnificens).
6. 6
   Ellipsis of man-of-war bird or (obsolete) man-of-war hawk (“any of a number of seabirds, especially one which attacks other seabirds to take their food”): The Arctic skua (Stercorarius parasiticus).
7. 7
   Senses relating to animals: Ellipsis of Portuguese man-of-war (“Physalia physalis, a jellyfish-like marine cnidarian consisting of a floating colony of hydrozoans attached to a float”).
8. 8
   Alternative form of man-of-war.