We use the word "bully" to describe a person who hurts or harasses another person for pleasure. (or the person is just naturally mean.) A bully can be a child or an adult. Lately a lot of attention has been focused on bullying in American schools, but it can happen among adults in offices or neighborhoods. It’s a good word to learn about.
Reggie is a bully.
These sentences show how "bully" is used as a noun:
Everyone knows that Reggie is a bully.
Martha teases the people she works with in a very mean way. She’s nothing but a bully.
Some bullies at a local school made a girl so unhappy that she hanged herself.
Steve’s experiences as a child made him into a bully, and he knows it; however, he still goes out of his way to make others uncomfortable.
Many Americans think Donald Trump is a bully.
You can use "bully" as a verb:
Mike bullied a boy into giving up his lunch money.
I know a teenage girl who was bullied so much at school that she often stayed home. (This sentence uses the passive voice.)
My wife’s boss bullies his employees into working extra hours and on the weekends.
No one likes the way the police bullied the protestors with mace.
These sentences show how "bully" is used in the form of a gerund:
Bullying is a problem in some schools.
Parents were upset to learn that a situation involving bullying wasn’t addressed.
If you are a victim of bullying, you should seek help.
Reggie is a bully.