The Collaborative International Dictionary of English v.0.48:
Alfresco \Al*fres"co\, adv. & a. [It. al fresco in or on the fresh.] In the open-air. --Smollett. [1913 Webster]WordNet (r) 3.0 (2006):
alfresco adv 1: outside a building; "in summer we play outside" [syn: outside, outdoors, out of doors, alfresco] [ant: indoors, inside] adj 1: in the open air; "an alfresco lunch"; "an open-air theater" [syn: alfresco, open-air(a)]