'Lock step' definitions:

Definition of 'Lock step'

From: GCIDE
  • Lock step \Lock" step`\n.
  • 1. A mode of marching by a body of men going one after another as closely as possible, in which the leg of each moves at the same time with the corresponding leg of the person before him. [1913 Webster]
  • 2. Hence: (fig.) The slavish copying of one person's actions by another; as, party members who vote in lockstep with the leadership. [PJC]