companion

noun

1. A friend, acquaintance, or partner; someone with whom one spends time or accompanies

   “His dog has been his trusted companion for the last five years.”

   “Heere are your Sonnes againe, and I muſt looſe / Two of the ſweet’ſt Companions in the World.”

   “The krogan have had a love-hate relationship with varren for millennia, alternately fighting them for territory and embracing them as treasured companions.”

   “For the most part, Hefner's female companions all adhered to the same mold: twentysomething, bosomy and blonde. "Well, I guess I know what I like," he once said when asked about his preferences.”

2. (dated)A person employed to accompany or travel with another.
3. The framework on the quarterdeck of a sailing ship through which daylight entered the cabins below.
4. The covering of a hatchway on an upper deck which leads to the companionway; the stairs themselves.
5. A knot in whose neighborhood another, specified knot meets every meridian disk.
6. (figuratively)A thing or phenomenon that is closely associated with another thing, phenomenon, or person.
7. (attributive)An appended source of media or information, designed to be used in conjunction with and to enhance the main material.

   “The companion guide gives an in-depth analysis of this particular translation.”

8. A celestial object that is associated with another.
9. A knight of the lowest rank in certain orders.

   “a companion of the Bath”

10. (derogatory, obsolete)A fellow; a rogue.

    “[L]et vs knog our praines together to be reuenge on this ſame ſcall ſcuruy-cogging-companion the Hoſt of the Garter.”

verb

1. (obsolete)To be a companion to; to attend on; to accompany.

   “we had better turn south quickly and compare the elements of education which formed , and of creation which companioned , Salvator .”

2. (obsolete)To qualify as a companion; to make equal.

   “Finde me to marrie me with Octauius Cæſar, and companion me with my Miſtris.”