companion noun [ C ] (PERSON)
B2 a person you spend a lot of time with often because you are friends or because you are travelling together:
a travelling companion
› in the past, a young woman who was paid to care for and provide friendship for an old or ill woman, especially while she was travelling
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Friends, acquaintances & contemporaries
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companion noun [ C ] (OBJECT)
› old-fashioned either of two matching objects:
I've still got one of the candlesticks but I've lost its companion.
companion noun [ C ] (BOOK)
› used in the title of a type of book that gives you information on a particular subject or tells you how to do something:
the Music Lover's Companion
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