IshPs 14(22) :ܟܣ̈ܝܬܐ ܕܪ̈ܘܚܐ ܒ̈ܝܫܬܐ܃ ܕܟܬܫ̈ܢ ܥܡܢ ܥܠ ܐܦܝ̈ ܫܡ̈ܝܢܝܬܐ‏ : the hidden things of evil spirits that fight with us for the sake of heavenly things
See the entire entry for ktš vb. to beat; to fight