You know what it looks like… but what is it called?
TAKE THE QUIZ“mare's”
The following 2 entries include the term mare's.
mare's nest
noun: a false discovery, illusion, or deliberate hoax
mare's tail
noun: a common aquatic plant (Hippuris vulgaris of the family Plantaginaceae, the plantain family) with elongated shoots having dense whorls of narrow finely tapered leaves
Love words? Need even more definitions?
Merriam-Webster unabridged