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Found one definition

1.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
   喝 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, かつ /kˈätsɯᵝ/
   1. (interjection (kandoushi))
   exclamation used to scold practitioners (in Zen)
   2. (noun (common) (futsuumeishi))
   scolding or threatening with a shout