The Collaborative International Dictionary of English v.0.48:

Suppress \Sup*press"\, v. t. [imp. & p. p. Suppressed; p. pr.
   & vb. n. Suppressing.] [L. suppressus, p. p. of supprimere
   to suppress; sub under + premere, pressum, to press. See
   Sub-, and Press.]
   1. To overpower and crush; to subdue; to put down; to quell.
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            Every rebellion, when it is suppressed, doth make
            the subject weaker, and the prince stronger. --Sir
                                                  J. Davies.
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   2. To keep in; to restrain from utterance or vent; as, to
      suppress the voice; to suppress a smile. --Sir W. Scott.
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   3. To retain without disclosure; to conceal; not to reveal;
      to prevent publication of; as, to suppress evidence; to
      suppress a pamphlet; to suppress the truth.
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            She suppresses the name, and this keeps him in a
            pleasing suspense.                    --Broome.
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   4. To stop; to restrain; to arrest the discharges of; as, to
      suppress a diarrhea, or a hemorrhage.
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   Syn: To repress; restrain; put down; overthrow; overpower;
        overwhelm; conceal; stifle; stop; smother.
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