What is an alcohol? Give a short definition.

My answer: An organic compound in which one or more groups of hydroxyl is bonded to a chain of hydrocarbons.

Do I need to change something of my answer to make it easier to understand? Thanks.

Your answer is accurate and technically correct. However, if you would like to make it easier to understand for a broader audience, you could simplify the language and break it down into simpler terms.

Here's a suggested revision:

"An alcohol is a type of chemical compound that is formed when a group called hydroxyl is attached to a chain of carbon atoms. It is commonly found in drinks like beer, wine, and spirits, and is known for its ability to induce various effects on the body when consumed."