noun

a hole or tunnel dug by a small animal, especially a rabbit, as a dwelling.

warren,tunnel,hole,lair,set,den,earth,retreat,excavation,cave,dugout,hollow,scrape

verb

(of an animal) make a hole or tunnel, typically for use as a dwelling.

moles burrowing away underground

tunnel,dig (out),excavate,grub,mine,bore,drill,channel,hollow out,gouge out,scoop out,cut out,delve