What is the meaning of -re?

forms Catalan second conjugation verbs

Forms nouns, mostly from nominal stems.

one of the three main verb endings, along with -er and -ir

Front-vowel variant of -ra. See details there.

Alternative form of -erie

masculine agent suffix, originally applied only to nouns

Attached to the ends of verb infinitives to form nouns, meaning "the action or result of"; -ing, -ation

Forms the comparative degree of a few adjectives, most of which change their stem vowel (umlaut) when this happens.

Source: wiktionary.org