Pronunciation (US) IPA (key): /stɛər/ (UK) IPA (key): /stɛə/ Audio (US)(file) Homophone: stare Noun Singular stair Plural stairs (countable) A stair is one flight of steps. Related words staircase downstairs upstairs stairway stairwellWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads