Lieu is defined as instead of or in place of something.
An example of lieu is someone saying they are going to the park instead of going to the beach.
place: now chiefly in the phrase in lieu of, in place of; instead of
Origin of lieuMiddle English liue from Old French lieu from Classical Latin locus, place: see locus
Origin of lieuFrench from Old French from Latin locus
- See in lieu or in lieu of.