Irimë was born during the Noontide of Valinor, probably in Tirion. She was the third child of Finwë and Indis and their second daughter. Little is known about her except that Irimë joined the Revolt of the Ñoldor and went to Middle-earth with Fingolfin and his company. Irimë was slain during the Battles of Beleriand.
The name Irimë has unclear origins, both in language and meaning. Her mother-name was Lalwendë, or in shortened form, Lalwen, by which she was generally known. Lalwendë comes from Quenya and it means "laughing maiden". It appears to me made from the words lala ("laugh") and the feminine ending wendë ("maiden"). In some versions she was known as Irien, which may have been her father-name. It is possible that both "Irimë" and "Irien" could have origins in the Quenyan words írissë and írë ("desire") or perhaps the word "írima" ("lovely, desirable").