I. kəm-ˈpan-yən noun
Usage: often attributive
Etymology: Middle English compainoun, from Anglo-French cumpaing, cumpaignun, from Late Latin companion-, companio, from Latin com- + panis bread, food — more at food
Date: 13th century
1. : one that accompanies another : comrade , associate ; also : one that keeps company with another
2. obsolete : rascal
3.
a. : one that is closely connected with something similar
b. : one employed to live with and serve another
4. : a celestial body that appears close to another but that may or may not be associated with it in space
II. verb
Date: 1622
transitive verb
: accompany
intransitive verb
: to keep company
III. noun
Etymology: by folk etymology from Dutch kampanje poop deck
Date: 1762
1. : a hood covering at the top of a companionway
2. : companionway