Meaning of “low” - Learner’s Dictionary

low

adjective uk us /ləʊ/
NOT HIGH

B1 near the ground, not high:

a low fence
LEVEL

A2 below the usual level:

a low income
a low number
Fish is very low in (= has little) fat.
SOUND

deep or quiet:

a low voice
a low note
LIGHTS

If lights are low, they are not bright:

We have very low lighting in the main room.
UNHAPPY

unhappy and without energy:

Illness of any sort can leave you feeling low.
→ See also be at a low ebb , keep a low profile

(Definition of “low adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)