Horsetails rhymes with:
coattails, cocktails, dovetails, fairytales, retails, telltales, airedales, bloomingdale's, bloomingdales, clinkscales, coattails, cocktails, conrail's, dovetails, fairytales, female's, females, fingernails, guardrails, handrails, hemdale's, lawnsdale's, mondale's, monorails, palmdale's, resales, retails, stockdale's, telltales, toenails, wholesales