burrow

[1]	dig , tunnel , delve , tunnel , bore , excavate
[2]	break (asunder) , rupture , shatter , explode , blow up , puncture , (Slang) bust

[1]	tunnel , excavation , hole , warren , tunnel
[2]	inter , inhume , lay to rest
[3]	abandon , forget , consign to oblivion , eradicate , extirpate
[4]	submerge (oneself) , exile (oneself) , plunge , become engrossed/absorbed
[5]	conceal , obscure , hide , cover up
[6]	overwhelm , overcome , inundate