This is the 4198th most frequent Spanish word.
liz
The word "liz" does not have a meaning in standard Spanish; it is often a proper name.
In this sentence, 'liz' appears to be a misspelling of the word 'luz,' which means 'light.' It is used here to refer to a light source in the room.
La liz del salón estaba encendida.
The light in the room was on.
Here, 'Liz' is used as a proper noun, specifically as a name, likely referring to an individual.
Liz es una persona muy amable.
Liz is a very kind person.
In this case, 'Liz' appears to be part of a proper noun for a geographic location, possibly the name of a river.