(military, typically derogatory) A style of march in which the legs advance in turn without bending the knee, whether as a low quick march or a rigorous high slow march for ceremonial occasions; the various drills associated with these marches.

(military, typically derogatory) To march with a goose-step.

(military) A step in marching, by which a soldier, while advancing, gradually takes ground to the right or left at an angle of about 25 degrees.

(idiomatic) A dangerous person, who is not to be messed with.

A stone that can be stepped on in crossing something, especially a marsh or creek. / (idiomatic) Something used as a way to progress to something or somewhere else.

Alternative form of stepping stone

To initiate a course of action, often against something that one disapproves of.

a form of aerobics involving repeated stepping up onto, and down from a block or platform

(transitive, idiomatic) To increase, augment, or advance, especially by one or more steps.

(intransitive, idiomatic) To assume or take responsibility.