[buck up] {v. phr.}, {informal} To make or become more cheerful; […]

[build a fire under] {v. phr.} To urge or force (a […]

[build castles in the air] or [build castles in Spain] {v. […]

[build on sand] {v. phr.} To lay a weak or insufficient […]

[build up to] {v. phr.} To be in the process of […]

[bum around] {v. phr.}, {slang} To aimlessly wander in no definite […]

[bum to a crisp] {v. phr.} To burn black; burn past […]

[burn a hole in one's pocket] {v. phr.} To make you […]

[burn down] {v. phr.} To burn to the ground; be totally […]

[burn one's bridges] also [burn one's boats] {v. phr.} To make […]