Definitions of lurch:

• noun:   an unsteady uneven gait
• noun:   the act of moving forward suddenly
• noun:   abrupt up-and-down motion (as caused by a ship or other conveyance)
• noun:   a decisive defeat in a game (especially in cribbage)
• verb:   move slowly and unsteadily

  Example: "The truck lurched down the road"

• verb:   defeat by a lurch
• verb:   move abruptly

  Example: "The ship suddenly lurched to the left"

• verb:   loiter about, with no apparent aim
• verb:   walk as if unable to control one's movements