Tra từ companion - Từ điển Oxford Advanced Learner 8th

com·pan·ion [companion companions] BrE [kəmˈpæniən] NAmE [kəmˈpæniən] noun
1. a person or an animal that travels with you or spends a lot of time with you
•travelling companions
•Geoff was my companion on the journey.
• (figurative)Fear was the hostages' constant companion.
2. a person who has similar tastes, interests, etc. to your own and whose company you enjoy
•She was a charming dinner companion.
•His younger brother is not much of a companion for him.
•They're drinking companions (= they go out drinking together).
3. a person who shares in your work, pleasures, sadness, etc
•We became companions in misfortune.
4. a person, usually a woman, employed to live with and help sb, especially sb old or ill/sick
5. one of a pair of things that go together or can be used together
•A companion volume is soon to be published.
6. used in book titles to describe a book giving useful facts and information on a particular subject
•A Companion to French Literature
see also ↑boon companion

Word Origin:
Middle English: from Old French compaignon, literally ‘one who breaks bread with another’, based on Latin com- ‘together with’ + panis ‘bread’.

Example Bank:
•Fear was her constant companion.
•He was an entertaining dinner companion.
•She lived in the house as a companion to our grandmother.
•Fear was the hostages' constant companion.
•Jeff was my companion on the journey.
•They're drinking companions.