a verbal quarrel; an argument (usually spoken, often a brief dispute).
昨夜、友達とちょっとした口喧嘩をしてしまった。
Last night I ended up having a little argument with a friend.
口喧嘩で終わらせずに、きちんと話し合ったほうがいい。
Rather than ending things with a quarrel, it's better to talk it through properly.
親と口喧嘩して家を出たが、すぐに連絡が来て和解した。
I had an argument with my parents and left home, but they contacted me soon and we reconciled.