P Gn7:4 :ܕܡܟܐ ܠܫܒܥܐ ܝܘܡ̈ܝܢ‏ : for seven days from now
See the entire entry for mekkā adv. from here

P Gn7:4 :ܡ݁ܚܬ ܐܢܐ ܡܛܪܐ‏ :
See the entire entry for nḥt vb. to descend