spare part

1. 1.

   an extra component of a machine or other apparatus

   Synonymsspare

   Broadercomponent

Questions about spare part

What does spare part mean?

spare part means "an extra component of a machine or other apparatus".

What is another word for spare part?

Close synonyms include spare. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is spare part a common word?

spare part is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.