IPA: /ræbɪˈnɪkli/
KK: /ræbɪˈnɪkli/
In a manner that relates to or is characteristic of rabbis or their teachings.
The decision was made rabbinically, following traditional interpretations of the texts.
Rabbinically → It is formed from "rabbi" (from Hebrew "רַבִּי" (rabbi), meaning my master or teacher) and the suffix "-ically" (meaning in a manner relating to). The word "rabbinically" refers to something done in the manner of a rabbi or according to rabbinical teachings.
Think of a rabbi as a teacher or master, and remember that when something is done 'rabbinically', it is done in the way that a rabbi would teach or guide.