Chloroform (noun)

1. A colorless, sweet-smelling liquid used as a solvent and anesthetic.
2. A chemical compound with the formula CHCl3, used as a solvent and anesthetic, but also a potential environmental pollutant.

Origin:

The word "chloroform" is derived from its chemical structure, which is composed of chlorine and carbon atoms. it is first recorded in english in the 19th century.

Examples:

1. Chloroform was once used as an anesthetic during surgery.
2. The use of chloroform as an anesthetic has been phased out due to its potential health risks.
3. Chloroform is used to extract oils and fats from plants.
4. Chloroform is a toxic substance, so it should be handled with care.
5. Chloroform is a volatile organic compound that can contribute to air pollution.