Gleacher Share definition Flag A Chicago regional slang which can be used as a noun, verb or adjective to describe a sexual and/or filthy act. Man, I really tore up that Gleacher last night. She couldn't even walk the next day. Gleacher by Doobachuk July 12, 2017 0 0 Get merch Get the Gleacher mug. Buy Now — $32.95 See more merch