NIGHTCLUB is validvalid

to frequent nighttime entertainment establishments [v NIGHTCLUBBED, NIGHTCLUBBING, NIGHTCLUBS] : NIGHTCLUBBER [n], NIGHTCLUBBING [n]

106,460 of 196,601 in NWL2023·also valid in CSW24

a club for drinking and entertainment, etc., open between evening and morning [n -S] / to visit nightclubs [v NIGHTCLUBBED, NIGHTCLUBBING, NIGHTCLUBS]