Longman Dictionary of Contemporary English - boss

~1 n 1 the person who employs you or who is in charge of you at work  (I'll have to ask my boss for a day off. | be your own boss (=work for yourself rather than being employed by someone else)) 2 informal a manager with an important position in a company or other organization  (Prison bosses launched an investigation into major security lapses. | Bosses got pay increases of 75%, when the workers' pay was cut to $13,000.) 3 the person who is the strongest in a relationship, who controls a situation etc  (When you first start training a dog it's important to let him see that you're the boss. | show sb who's boss (=make someone realize that you are in control, not them)) 4 a round decoration on the surface of something such as the ceiling of an old building ~2 v to tell people to do things, give them orders etc, especially when you have no authority to do it  (boss sb about)  (BrE/around I'm sick of him bossing us around like that. Who does he think he is?) ~3 adj slang very attractive or fashionable  (That's boss, that new computer game.)