Arabic term (edited): �����

First, let us correct the spelling: It is لوذعي, not لوزعي. The latter is a common error arising from the way the letter ذ is pronounced in some Arab countries.

Here is the definition from Al-Munjid:

اللوذع واللوذعي هو الذكي الذهن الحديد الفؤاد كأنه يلذع من ذكائه، وهو أيضاً الفصيح اللسان

It is derived from the verb لذع, which is what fire or a very hot object does when it touches something or someone. It is used for both the singeing effect and the scalding sensation.

From that basic sense, the word became a useful source of derivatives to be used in reference to spoken or written words that have an analogous effect (such as critical words that have a sharp, poking impact, or analytical writing that is very incisive, cutting to the heart of the matter).

Other derivatives are used to describe very sharp minds and/or a profound speech/writing ability.

In your context, the cinnamon drink is a hot, spicy drink.