GRE shack Definition A small, poorly built cabin or house. Example "They spent the weekend fishing from a wooden shack by the lake." Sign in to save GRE Quiz → ← shabby shackle → Study tips featuring "shack" Write GRE Words Into Your Own Sentences Related words GRE swill GRE taper GRE testy GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct