Syr-RomLaw.63.9 :ܘܢܡܬܚܘܢ ܠܗܝܢ ܦܠ̈ܛܘܬܐ܃ ܘܢܥܒܕܘܢ ܒܗܝܢ ܒܝܬ ܡ̈ܠܟܐ‏ : that they might lay out plazas for them (cities) and make palaces in them
See the entire entry for plaṭṭīā n.f./m. open place, plaza