one's luck is in
01
used to emphasize how lucky a person is or how successful they are
![{one's} luck [is] in definition and meaning](https://cdn.langeek.co/photo/17547/original/lucky?type=jpeg "{one's} luck [is] in definition and meaning")
idiom
informal
Exempel
She had a winning streak at the casino; her luck was definitely in.
used to emphasize how lucky a person is or how successful they are
