Meanings
A metaphorical image: when kissing the buttocks of another person, one's nose is liable to be covered in brown feces.
How to pronounce "brown noser":
AU
One who brownnoses (flatters or humors somebody in an obsequious manner for personal gain); one who sucks up; a bootlicker, ass-kisser, sycophant.
Example Sentences
1
He is such a brown noser, always siding with the boss to get ahead.
2
The new intern is a major brown noser, constantly complimenting the supervisors.
3
Janine is a known brown noser, always bringing coffee and snacks for the manager.
4
I can't stand brown nosers who pretend to be someone they're not just to gain favor.
5
The brown noser in accounting always volunteers for extra work to impress the higher-ups.