Green’s Dictionary of Slang

nap n.2

[SE nap, (woollen) cloth that has a nap surface on it]

1. a sheep; used only in phr. napper of naps under napper n.1 [note napper’s poll n.].

2. (Aus.) in senses of bed or covering [SE knapsack; but note SE nap, a short sleep].

(a) a sleeping bag.

[UK]Partridge DSUE (8th edn) 778/1: C.19–20.

(b) blankets or some other covering used by a sleeper in the open-air, a pack (as used in Northern Territory).

[Aus]A. Russell Tramp-Royal 55: We [...] dug a hole for the hips to lie in, and unrolled our ‘nap’.
[Aus]A. Russell Gone Nomad 15: Here I [...] built a fire, placing beside it my nap.
[Aus]X. Herbert Capricornia (1939) 417: The nap [...] consisted of two greasy bran-sacks, or, as bushmen call them, Wagga Rugs.
[Aus]K. Tennant Battlers 126: I guess you can share my nap, Jim.
[Aus](con. 1936–46) K.S. Prichard Winged Seeds (1984) 18: Feeling crook. Shake a leg. Bring nap.