Green’s Dictionary of Slang

hencackle n.

[mountaineering jargon hencackle, an easy climb]

(N.Z.) a trifle, anything unimportant.

1941		Baker N.Z. Sl.
1988		McGill Dict. of Kiwi Sl.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].