bury the hatchet
to stop an argument and become friends again:
Can't you two just bury the hatchet?

[TahlilGaran] Advanced Learner's Dictionary ▲

bury the hatchet
to agree that you will forget about arguments and disagreements with someone.
The two teammates hope to bury the hatchet long enough to win the championship.

Etymology: based on the custom of literally burying a hatchet (= cutting tool with a small handle) as a symbol of peace between Native American tribes (= groups of people)

[TahlilGaran] English Idioms Dictionary ▲

bury the hatchet
to stop arguing and become friendly with someone
He buried the hatchet with his brother and they are now friendly again.

[TahlilGaran] English Idioms Dictionary ▲

bury the hatchet
v. phr., informal To settle a quarrel or end a war; make peace.
The two men had been enemies a long time, but after the flood they buried the hatchet.
Compare: MAKE UP⁵.

[TahlilGaran] English Idioms Dictionary ▲