Meaning

noun a short selection from the Prophets read on every Sabbath in a Jewish synagogue following a reading from the Torah

originFrom Hebrew הַפְטָרָה (haftará), also through Yiddish הפֿטרה (haftore). The alternative spellings with -or- and pronunciations with /ɔːɹ/ – which may appear even outside of Ashkenazi pronunciation traditions – may possibly be strengthened due to influence from Torah or reanalysis to half + Torah, as the haftarah follows the reading of the Torah and is of secondary importance.

Etymology from Wiktionary, CC BY-SA 3.0