Bekhorot 37: words to know

לְאַפּוֹקֵי (le'apokei): To exclude. Used to explain that a ruling was formulated specifically to reject a dissenting Tanna's view.
נִמּוּקוֹ עִמּוֹ (nimmuko immo): His reasoning is with him; his logic is sound. Mentioned as a special principle that normally favors Rabbi Yosei's opinions over his colleagues.
כְּלָל וּפְרָט וּכְלָל (kelal uferat ukelal): A generalization, a specification, and a generalization. The hermeneutic method applied to biblical verses to define which blemishes permit slaughtering a firstborn.
מוּם עוֹבֵר (mum over): A temporary blemish. The Gemara investigates whether a transient defect is valid to permit slaughtering a firstborn animal.
וּרְמִינְהִי (urminhi): And they pointed out a contradiction. Introduces a contradiction between Rabbi Yosei ben Yehuda's required hole size and a baraita regarding piercing a slave's ear.