[n] (psychology) the conscious exclusion of unacceptable thoughts or desires
[n] forceful prevention; putting down by power or authority; "the suppression of heresy"; "the quelling of the rebellion"; "the stifling of all dissent"
[n] the act of withholding or withdrawing some book or writing from publication or circulation; "a suppression of the newspaper"
[n] (botany) the failure to develop of some part or organ of a plant