Английский словарь американских идиом - step off

{v.} 1. To walk or march quickly. * /The drum major lowered his baton and the band stepped off./ 2. or pace off . To measure by taking a series of steps in a line. * /The farmer stepped off the edge of the field to see how much fencing he would need./ * /The referee stepped off a five-yard penalty against our team./