Definitions from Wiktionary ( )

▸ noun:  A friend, acquaintance, or partner; someone with whom one spends time or accompanies
▸ noun:  (dated) A person employed to accompany or travel with another.
▸ noun:  (nautical) The framework on the quarterdeck of a sailing ship through which daylight entered the cabins below.
▸ noun:  (nautical) The covering of a hatchway on an upper deck which leads to the companionway; the stairs themselves.
▸ noun:  (topology) A knot in whose neighborhood another, specified knot meets every meridian disk.
▸ noun:  (figuratively) A thing or phenomenon that is closely associated with another thing, phenomenon, or person.
▸ noun:  (attributive) An appended source of media or information, designed to be used in conjunction with and to enhance the main material.
▸ noun:  (astronomy) A celestial object that is associated with another.
▸ noun:  A knight of the lowest rank in certain orders.
▸ noun:  (obsolete, derogatory) A fellow; a rogue.
▸ verb:  (obsolete) To be a companion to; to attend on; to accompany.
▸ verb:  (obsolete) To qualify as a companion; to make equal.

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