pickone-horse . one-horse {adj. phr.} Insignificant; modest; provincial. Arnold's business is a one-horse operation; he never had a single employee. Categories: add yours adjective business Source: A Dictionary of American Idioms 'one-horse' on video Blackberry Smoke - One Horse Town (Official Audio) Blackberry Smoke - One Horse Town (Live) [from Homecoming: Live in Atlanta] BLACKBERRY SMOKE | One Horse Town - In The Backyard Sessions Tom Vek - One Horse Race sort: relevance, mode: exact match, q: "one-horse", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Discuss