Did you try looking it up? lol. Well, if you really want to know
without looking first, the meaning of carbolic has 2 definitions
according to dictionary.com:
carbolic #1 - of or derived from carbolic acid (probably doesn't
help you that much)
carbolic #2 - Pertaining to, or designating, an acid derived
from coal tar and other sources; as, carbolic acid (called also
phenic acid, and phenol).