Pronounced "chooooiieeech", this term refers to tall males with a dark complexion, generally Australians of European descent (predominately Greek or Italian). When referring to someone who is particularly identifiable as a cheech, this term may be used in conjunction with "full-blown" (ie. full-blown cheech). This kind of cheech is seen as a rarity and is often named 'Dion'.
Person 1: Oi Dion's full cheech ayy?
Person 2: Ye dude, he's full-blown cheech