boomerang
noun [ C ] uk/ˈbuː.mə.ræŋ/ us/ˈbuː.mə.ræŋ/
回飞镖，回飞棒
a curved stick that, when thrown in a particular way, comes back to the person who threw it
boomerang
verb [ I ] uk/ˈbuː.mə.ræŋ/ us/ˈbuː.mə.ræŋ/
自作自受；自食其果
If a plan boomerangs, it brings a harmful result instead of the intended good one.
Our plan to take over the business could boomerang on us if we're not careful. 如果我们不小心，接管该企业的计划可能会让我们自吞苦果。