noun🔗ShareMustela erminea, the ermine or short-tailed weasel, a mustelid native to Eurasia and North America, distinguished from the least weasel by its larger size and longer tail with a prominent black tip."The stoat darted across the schoolyard, its black-tipped tail a flash of dark against the grass. "animalnaturebiologyecologyChat with AIVocabulary GamePractice Reading