Rabbit hole (6)

I believe the answer is:

burrow

'rabbit hole' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for burrow that I've seen before include "Tunnel; animal shelter" , "Hole dug by a rabbit" , "A rabbit's tunnel" , "Rabbit's hole" , "Tunnel made by rabbit" .)

I've seen this clue in The Sun, The Telegraph, the Sydney Morning Herald and The Irish Times.

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