#1 companion n. [comrade, fellow, familiar, associate] a friend who is frequently in the company of another; "drinking companions"; "comrades in arms". wn
#2 companion n. [fellow traveler, fellow traveller] a traveler who accompanies you. wn
#3 companion v. [company, accompany, keep company] be a companion to somebody. wn
#4 companion n. one paid to accompany or assist or live with another. wn
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