A crate is a wooden container that's made for transporting or shipping goods. Your uncle might send you a crate of Florida oranges for a Christmas gift.
Boxes made of wood that are filled with goods and loaded on trucks, ships, or planes are called crates, and to fill them is also to crate. Groceries are often shipped or delivered in crates, like crates of eggs, milk crates, or a crate of bananas. The amount of some item that fits in one crate is also called a crate — "The market ordered seven crates of ice cream for the Fourth of July weekend."