Pot has several common meanings:

1. A deep, round container used for cooking or holding things. You might boil water in a pot on the stove, or cook spaghetti in a big pot. Plants grow in flower pots filled with soil. A pot usually has high sides and sometimes a lid, unlike a flat pan. When people say “a watched pot never boils,” they mean that time seems to move slowly when you're waiting impatiently for something.
2. The total amount of money bet in a card game, sitting in the middle of the table. The phrase “sweetening the pot” means adding something extra to make a deal more appealing.

The word can also be a verb meaning to put a plant into a pot with soil, like when you pot seedlings in the spring.