«وهو ما يقصد به تفسير مدلول اللفظ»
It is that by which the meaning signified by a word is explained.
Suppose a learner does not know the Arabic word “ghaḍanfar.” The clarification is:
«الغضنفر الأسد»
Ghaḍanfar means lion.
The unfamiliar expression is now understood.
This, however, has not identified the lion's proximate genus and differentia. Explaining a word's meaning and providing an essential definition of the thing are distinct aims.