- something imagined to be an extraordinary discovery but proving to be a delusion or a hoax: The announced cure for the disease was merely another mare's-nest.
- an extremely confused, entangled, or disordered place, situation, etc.: We just moved in, and the place is a mare's-nest.
Origin of mare's-nest
First recorded in 1610–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a discovery imagined to be important but proving worthless
- a disordered situation