Good afternoon!
An orbital, in chemistry, can be described as a layer where an electron is expected to be found, around a nucleus of an atom.
Atoms contain 3 parts - protons, neutrons, and electrons. The protons and neutrons stick together in the center, while the electrons are flying around the entire nucleus (protons+neutrons).
The location of these electrons is unknown, as they fly around, however there is a "most likely found" location.
These are the orbitals. They are the areas where the electron is most likely to be found.
Good luck!