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

[Aus]‘6x8’ [Dick Holt] in Bulletin (Sydney) 7 Aug. red page/4: Blankets - ‘Early risers,’ Old and common. Bush men are seldom burdened with much ‘nap’ (another term for blanket), and on cold winter mornings are hunted out of bunk at daybreak in search of the nearest fire.
[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.

(b) a sleeping bag.

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