This lesson will help you define brain box, grey matter, bird-brain, brainwave, brain damage, brain teaser, dementia and psychologist.
(a) brain box noun a very intelligent person
- Einstein was a real brain box at school.
(–) grey matter uncountable noun an informal word for your brain
- Stephen Hawking’s grey matter works better than most other people’s.
(a) bird-brain noun a stupid person
- Mozart may have been a bird-brain in the kitchen, but with music he was a genius.
(a) brainwave noun a very good idea that comes to you suddenly
- Leonardo da Vinci had many brainwaves.
(–) brain damage uncountable noun injury to someone’s brain because of an accident or illness
- Fortunately, Isaac Newton didn’t suffer brain damage when he fell off his horse.
(a) brain teaser noun a problem or puzzle, especially one designed to be solved as a game
- John Stuart Mill enjoyed doing brain teasers in the evenings.
(–) dementia uncountable noun a serious medical condition in old people causing their mental abilities to become worse
- Although Nikola Tesla stopped working a few years before his death there is no evidence that he suffered from dementia.
(a) psychologist noun someone who studies how people’s minds work
- Only an experienced psychologist can understand how the mind of a genius like Michael Faraday works.
Now watch the video lesson.