Ichidan verb, Intransitive verb
to go uninvited; to call on without an invitation; to barge in on; to gatecrash
たいへん困ったことに、彼がパーティーに押しかけてきた。To our great annoyance, he barged in on our party. to throng to; to crowd into; to converge upon; to pile in
Also written 押し掛ける【おしかける】