To hide something from view or from public knowledge, to try to keep something secret.
To exclude undesirable thoughts from one's mind.
To forbid the use of evidence at trial because it is improper or was improperly obtained.
To put an end to, especially with force, to crush, do away with; to prohibit, subdue.
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 stop a flow or stream.
To reduce unwanted frequencies in a signal.