measure word, particle · A measure word for long, slender objects like cigarettes or strings.

桌子上有一根筷子。

noun · The root of a plant or the basis and origin of something.

这棵老树的根已经扎进了土层深处。

noun · A group of atoms behaving as a unit in chemistry.

硫酸根是带电的离子团。

measure word · In Buddhist terminology, refers to the six sense organs (eye, ear, nose, tongue, body, mind) through which a person perceives the world.

修行者追求的是六根清净。