Word Study
out-of-door
CIDE DICTIONARY
out-of-door, adj.
located, . [WordNet 1.5]
out-of-door, a.
Being out of the house; being, or done, in the open air; suited for the open air; outdoor; as, out-of-door exercise. See Out of door , under Out, adv. [1913 Webster]
"Amongst out-of-door delights." [1913 Webster]
For further exploring for "out-of-door" in Webster Dictionary Online