noun a fellow;
in contempt.
2. companion ·vt to qualify as a companion; to make equal.
3. companion ·noun a wooden hood or penthouse covering the companion way; a companion hatch.
4. companion ·vt to be a companion to; to attend on; to accompany.
5. companion ·noun a knight of the lowest rank in certain orders; as, a companion of the bath.
6. companion ·noun a skylight on an upper deck with frames and sashes of various shapes, to admit light to a cabin or lower deck.
7. companion ·noun one who accompanies or is in company with another for a longer or shorter period, either from choice or casually; one who is much in the company of, or is associated with, another or others; an associate; a comrade; a consort; a partner.