Verb
ride a horse foaled by an acorn (third-person singular simple present rides a horse foaled by an acorn, present participle riding a horse foaled by an acorn, simple past rode a horse foaled by an acorn or (obsolete) rid a horse foaled by an acorn, past participle ridden a horse foaled by an acorn)
(obsolete, slang) To be hanged on the gallows.