Brain | Mean of brain in English Dictionary

/ˈbreɪn/

• Noun
• the organ of the body in the head that controls functions, movements, sensations, and thoughts
1. Scientists are learning more about how the human brain works.
2. The left and right sides of the brain have different functions.
3. a brain injury/tumor
4. brain damage/surgery
5. brain cells/tissue
• the ability to think and reason
1. Don't be such an idiot—use your brain. [=head]
2. She has a good brain. [=she is smart]
3. I'm sorry—I don't know where my brain is today. [=I'm not thinking clearly today]
4. If he had half a brain [=if he was at all smart], he would have left a long time ago.
5. If he had any brains, he would have left a long time ago.
6. She has both brains and beauty.
• a very intelligent person
1. The other children always teased him about being such a brain.
2. She is one of the best brains [=intellects, minds] in the field.
3. She's the brains of this organization.
4. He was the brains behind the scheme.

• to hit someone on the head in a way that causes serious injury or death
1. They threatened to beat my brains in if I ever came here again.
• to kill someone with a shot to the head
1. When he refused to hand over the money, the robbers threatened to blow his brains out.
• to think very hard
1. I cudgeled my brains for a solution to the problem.
• always in your thoughts
1. I've had pizza on the brain all day. [=I've been thinking about pizza all day]
2. He's got sex on the brain. [=he's always thinking about sex]
• to talk to someone in order to get helpful information or advice
1. Do you have a moment? I need to pick your brain about a little situation that has come up.
• Verb
• to hit (someone) on the head very hard
1. The tree limb fell and nearly brained me.