This is the 9915th most frequent Catalan word.
mourà
"Will move" (third-person singular future tense of "moure").
Here, 'mourà' describes the kinetic effect of the wind on the physical object, the leaves.
El vent mourà les fulles dels arbres.
The wind will move the leaves of the trees.
The verb 'mourà' (future tense of 'moure') is used here to denote the action of moving an object from one location to another.
Ell mourà la taula de lloc.
He will move the table from its place.
The verb 'mourà' is metaphorically used to indicate progress or advancement in a non-physical context.