Although the name Jimmy can mean 'to pry open a window', it is a short form of 'James'.
The urban dictionary displays MANY other meanings, the one I like best (so far) is 'anyone in Scotland'.
It could be a short name for Jimmy as in Jimi Hendrix.
If you are referring to the verb, meaning to break open or rob, it's paratz (פרץ) If you are referring to the name Jimmy, it has no meaning in Hebrew because it's not a Hebrew name.
Jimmy Eriksson's birth name is Jimmy Eriksson.
Jimmy Wakely's birth name is Jimmy Clarence Wakely.
Jimmy Wales's birth name is Jimmy Donal Wales.
Jimmy Mirikitani's birth name is Jimmy Tsutomu Mirikitani.
Jimmy Gulzar's birth name is Jimmy Bryan Gulzar.
Jimmy Golden's birth name is Jimmy W Golden.
Jimmy Kelley's birth name is Jimmy Jackson Kelley.
Jimmy Brandt's birth name is Jimmy Gunnar Brandt.
Jimmy Gaines's birth name is Jimmy Ray Gaines.
Jimmy Pethrus's birth name is Jimmy Erik Enhamre Pethrus.