slang To observe and examine someone or something, often to gain knowledge for a specific future purpose. A noun or pronoun can be used between "case" and "out." I cased my opponent out in preparation for the big fight.Judging from the security footage, those men cased out the shop hours before robbing it.
case someone/something out
tv. to look someone or something over carefully, with a view to additional activity at a later time. He cased out the fixtures to see which ones to replace.