\Ten"e*brous\, a. [L. tenebrosus, fr. tenebrae
darkness: cf. F. t['e]n['e]breux.]
Dark; gloomy; dusky; tenebrious. -- {Ten"e*brous*ness}, n.
      The most dark, tenebrous night.          --J. Hall
                                               (1565).
      The towering and tenebrous boughts of the cypress.
                                               --Longfellow.