We found 2 dictionaries that define the word mattress covers:

General (2 matching dictionaries)

1. mattress covers: Collins English Dictionary
2. mattress covers: Vocabulary.com

(Note: See mattress_cover as well.)

Definitions from Wiktionary (mattress cover) ▸ noun:  Synonym of mattress protector ▸ Also see mattress_cover ▸ Words similar to mattress covers ▸ Usage examples for mattress covers ▸ Idioms related to mattress covers ▸ Wikipedia articles (New!) ▸ Words that often appear near mattress covers ▸ Rhymes of mattress covers ▸ Invented words related to mattress covers