The true name of the Vala more commonly called Lórien, from the gardens of Lórien in Valinor where he dwelt.
Notes
1
This interpretation comes from a note in volume X of The History of Middle-earth, where the names Námo and Irmo are followed by a note: 'Judgement (of what is) Desire (of what should be or might be)'. In Irmo's case, the name seems to be connected to the Quenya word íre, 'desire'.