We found one dictionary that defines the word mare's teat grape:

General (1 matching dictionary)

1. mare's teat grape: Wiktionary

Definitions from Wiktionary (mare's teat grape) ▸ noun:  A grape of the mare's teat variety. ▸ Words similar to mare's teat grape ▸ Usage examples for mare's teat grape ▸ Idioms related to mare's teat grape ▸ Wikipedia articles (New!) ▸ Words that often appear near mare's teat grape ▸ Rhymes of mare's teat grape ▸ Invented words related to mare's teat grape