AphDem21.407:16 :ܘܐܣܩ ܦܬܚܬ ܪ̈ܚܡܘܗܝ ܩܘܪܒܢܐ‏ : he offered up his firstborn (fem.) as a sacrifice
See the entire entry for pāṯaḥ, pāṯḥā n.m. one who opens