noun
club for working adults
Refers to hobby or activity clubs whose members are primarily working adults, as opposed to university student circles. Often used in contrast to 大学サークル.
See also: サークル
社会人サークルでテニスを始めました。
I started playing tennis at a club for working adults.
週末は社会人サークルのバスケに参加しています。
On weekends I join the basketball club for working adults.
A university club or circle. 社会人サークル is its adult counterpart, typically with more flexible schedules and a wider age range.
Compound of 社会人 (working adult) and サークル (club/circle). The term became common as more adults sought hobby communities outside of work.