What is the meaning of Imma?

Alternative letter-case form of Imma.

romanization of 𐌹𐌼𐌼𐌰

but

reciprocal verbal particle followed by dependent form of verb: each other

around his/her/its/their

steam, vapour

condensation, misting (on windows etc)

mist (to form mist or to cover with mist)

Source: wiktionary.org