Verb
join in (third-person singular simple present joins in, present participle joining in, simple past and past participle joined in)
(intransitive) To participate, take part or get involved in something.
Actors perform out of the ordinary roles which invite spectators to join in or sit back and watch. Source: Internet
A few weeks later he challenged the Young Communist League ( Komsomol ) to join in "the construction project of the century." Source: Internet
Along with making those resolutions, join in by choosing from the list of traditional foods many try for the first day of a New Year. Source: Internet
All join in on a last reprise of the title song, surmising that we all must venture into the Woods while remembering the choices we've made and learning from each endeavor we come across ("Finale"). Source: Internet
And he has his fingers crossed our own PM will join in the fun. Source: Internet
All students, with or without perfect 300 bowling capabilities are also welcome to join in on the recreational bowling fun at 7 p.m. on Tuesdays at Great River Bowl and Partner’s Pub. Source: Internet