1. He is bound by ties of friendship.
2. John is bound up in his work.
3. This is beyond the bounds of decency.
4. You're out of bounds.
5. He was bound hand and foot.
6. He blew his brains out.
7. I was racking my brains to solve it.
8. He knows which side his bread is buttered on.
9. Man does not live by bread alone.
10. Let's wait for a break in the weather.
11. We had a lucky break.
12. He broke away from the guards.
13. He was out of breath.
14. He took a deep breath.
15. The poor man was gasping for breath.
16. Save your breath.
17. It's like talking to a brick wall.
18. He came down on us like a ton of bricks.
19. He was as bright as a button.
20. Look at the bright side of things.
21. They robbed the bank in broad daylight.
22. It is as broad as it is long.
23. He passed the buck to his friend.
24. I want to make a fast buck.
25. The poor old man kicked the bucket.
26. We can't go out. It's raining buckets.
27. He's got the painting bug.
28. There is a bugging device in the room.
29. What's bugging you?
30. He bummed £5 off me.
31. He did a bunk with the money.
32. He is making my life a burden.
33. He carries a heavy burden.
34. I don't want to burden you with my problems.
35. He buried a dagger in his heart.
36. He buried his face in his hands.
37. They buried the hatchet.
38. He was buried in thought.
39. He buries his head in the sand.
40. To write his books, he buries himself in the country.