1. one round; frequency; number of times
E.g.: 回忌 (death anniversary), 回数 (number of times), 毎回 (each time)
2. to turn; to rotate; to revolve; to circulate
E.g.: 回送 (forwarding), 回覧 (circulation)
3. to return; to restore to the original state; to look back
E.g.: 回顧 (recollection), 回収 (collection), 回生 (resurrection)
