idioms

bull market (a time when share prices are rising) The investors rake in more and more money during the bull market. They are waiting for this bull market to end.     – English Vocabulary

blind as a bat (completely blind) In the dark, I’m as blind as a bat. I left my glasses at home, so I’m as blind as a bat.     – English Vocabulary

bullheaded (stubborn or inflexible) John is bullheaded; he won’t listen to anybody else’s opinion. Don’t be so bullheaded; come with me.   – English Vocabulary

breed like rabbits (have many children in a short period of time) She is married to John, and they breed like rabbits. Some couples breed like rabbits just after marriage.    – English Vocabulary

black sheep  informal (a person who is regarded as a disgrace by his family or group) Ben is the black sheep of the family because he is always in trouble with the police. There is a black sheep in every flock. so – English Vocabulary