[box] See: [IN A BIND] or [IN A BOX], [PENALTY BOX], […]

[box office] {n.}, {informal} 1. The place at movies and theaters […]

[boy] See: [ALL WORK AND NO PLAY MAKES JACK A DULL […]

[boyfriend] {n.}, {informal} 1. A male friend or companion. * /"John […]

[boys will be boys] Boys are only children and must sometimes […]

[brain] See: [BEAT ONE'S BRAINS OUT], [BLOW ONE'S BRAINS OUT], [ON […]

[brain bucket] {n.}, {slang} A motorcycle helmet. * /If you want […]

[brain drain] {n.}, {informal} 1. The loss of the leading intellectuals […]

[brain trust] {n.} A group of specially trained, highly intelligent experts […]

[brain-storm] {v.} To have a discussion among fellow researchers or co-workers […]