bury

bury the hatchet end a quarrel or conflict and become friendly.

☞ This expression makes reference to a Native American custom of burying a hatchet or tomahawk to mark the conclusion of a peace treaty.

bury your head in the sand ignore unpleasant realities; refuse to face facts.

☞ This expression alludes to the belief that ostriches bury their heads in the sand when pursued, thinking that as they cannot see their pursuers the pursuers cannot see them.