Answer: threepm

AnswerCrossword Clue
THREEPMSix bells, perhaps
THREEPMSoap slot, perhaps
THREEPMMid-afternoon hr.
THREEPMSchool day's end, often
THREEPMSix bells, nautically
THREEPMEarlyish teatime
THREEPMDismissal time, maybe