Answer: The organic compound containing one or more -OH groups as the only functional group is alcohol.
Step-by-step explanation:
Functional groups are defined as the specific group of atoms in molecules which are responsible for the characteristic chemical reactions of the molecules.
The functional group given to us is hydroxyl group and the functional formula for this group is -OH.
The compound having hydroxyl groups are named as alcohol.
For Example: Methanol has the chemical formula of

Hence, the organic compound containing one or more -OH groups as the only functional group is alcohol.