godan verb (-mu), intransitive verb
hang out with; go around with; pal around with
Casual, often slightly negative or childish nuance; implies sticking together as a group or pair, sometimes excessively.
あの二人はいつもつるんでいる。
Those two are always hanging out together.
休み時間になると、決まっ
During breaks, they always pal around with the same group.