Synonyms for Conestoga wagon at Thesaurus.com with free online thesaurus, antonyms, and definitions. Find descriptive alternatives for prairie schooner. Prairie schooner definition is - a covered wagon used by pioneers in cross-country travel —called also prairie wagon. Find descriptive alternatives for Conestoga wagon. Synonyms for prairie schooner at Thesaurus.com with free online thesaurus, antonyms, and definitions.