adverb
- out-of-doors; in the open air: to dine alfresco.
adjective
- outdoor: an alfresco café.
adjective, adverb
- in the open air
1753, Italian, literally “in the fresh (air).” Italian al represents a contraction of words from Latin ad “to” (see ad-) + ille “that.” Alfresco also meant “painted on plaster that was still fresh or moist” (1764; see fresco).