Etymology
Advertisement

trooper (n.)

1630s, "soldier in a cavalry troop," from troop (n.) + -er (1). Extended to "mounted policeman" (1858, in Australia) then to "state policeman" (U.S.) by 1911.

Others are reading

Advertisement
Advertisement
Definitions of trooper

trooper (n.)
a soldier in a motorized army unit;
Synonyms: cavalryman
trooper (n.)
a mounted police officer;
trooper (n.)
a state police officer;
Synonyms: state trooper
trooper (n.)
a soldier mounted on horseback;
Synonyms: cavalryman
From wordnet.princeton.edu