It can also be used in a more nuanced way to describe things that are:
* Little: "a petit pastry"
* Tiny: "a petit coin of the garden"
* Slight: "a petit cough"
* Short: "a petit film"
It's important to note that "petit" can also be part of compound words, such as "petit déjeuner" (breakfast) or "petit four" (small cake).