We found one dictionary that defines the word in cases:

General (1 matching dictionary)

1. In-Case's: Wordnik

(Note: See in_case as well.)

Definitions from WordNet (in case) ▸ adverb:  if there happens to be need ("In case of trouble call 911") ▸ Also see in_case ▸ Words similar to in cases ▸ Usage examples for in cases ▸ Idioms related to in cases ▸ Wikipedia articles (New!) ▸ Words that often appear near in cases ▸ Rhymes of in cases ▸ Invented words related to in cases