Used other than figuratively or idiomatically: see step, on.
to adulterate a drug for the purpose of increasing its bulk, and therefore its profit; to dilute, cut.
To put an end to, especially with force, to crush, do away with; to prohibit, subdue.
To forbid the use of evidence at trial because it is improper or was improperly obtained.
To restrain or repress, such as laughter or an expression.
To prevent publication.
To stop or prevent the enemy from executing unwanted activities like firing, regrouping, observation or others.
To exclude undesirable thoughts from one's mind.
To stop a flow or stream.
To reduce unwanted frequencies in a signal.