1. A graduated rod dipped into a container to indicate the fluid level
   "He checked the oil level using the dipstick"
    
2. [vulgar] Insulting term of address for people who are stupid, irritating or ridiculous
   "Don't be such a dipstick and apologize for your mistake";

Derived forms: dipsticks

Type of: disagreeable person, gage [N. Amer, rare], gauge, unpleasant person

Encyclopedia: Dipstick