jump inverb/d͡ʒʌmp ˈɪn/

• 1

  To enter something quickly, usually a mode of transport.

  • I jumped in the car, and we sped off to the meeting.
• 2

  To join in on an activity quickly.

• 3

  To interrupt someone while they are speaking.

• 4

  slangTo initiate into an organization, usually a gang, with violence.

  • [Toothpick:] Been hanging with the homies in the hood for a while now / [Al Dog:] 'Bout time we jump your punk ass in / [Toothpick:] That's right. Let me tell you something in this world if you can't swim / [Al Dog:] You bound to drizzown / [Toothpick:] Yeah, and if you fall you better pick your punk ass up / [Al Dog:] That's right / [Toothpick, turning to the rest of the gang:] And the rest of y'all don't cut him no slack. Y'all fools get busy [they precede to a game of jump rope with the young man Toothpick and Al Dog were talking to jumping]
  • His [my cousin's] uncle was already in the gang. […] So, we go up to the guys, we didn't even know how to ask, kinda like "Hey, uh, can we get jumped in?" And they're like, "Yeah, come on." And all I remember is I landed on the ground and he [one of the gang members] got on top of me and boom! I blanked out.
• 5

  To play a card that matches the top card in the discard pile out of turn.

  • With +2, you build on them /add them together in a similar way, but you can only jump in if you have the same color +2, OR if the player whose turn it is has a +2 of any color, he can play it, since it is his turn and he is not jumping in on anyone. […] The wilds can be jumped in on by any wild.
• 6

  Used other than figuratively or idiomatically: see jump, in.

  • Cathy led the pig down to the pen. “Don’t jump in the mud,” she said. But a pig is a pig. It jumped in the mud.
  • From the way you skip and jump in the air when excited.
• 7

  datedslangTo ambush (someone).