Definition of suppresses:
(v) :
To put an end to, especially with force, to crush, do away with; to prohibit, subdue.
(v) :
To restrain or repress, such as laughter or an expression.
(v) :
(psychiatry) To exclude undesirable thoughts from one's mind.
(v) :
To prevent publication.
(v) :
(US, law) To forbid the use of evidence at trial because it is improper or was improperly obtained.
(v) :
To stop a flow or stream.