1. To fill some space or structure with a large or heavy amount of something. Let me know when you're finished loading the van with timber. We'll need a forklift to load the shelves in the warehouse with these pallets of books.

2. To burden something with an excessive amount of something else. Often used in passive constructions. The director loaded the film with so much symbolism that it's hard to figure out what is supposed to be taken literally. Snack cakes like these are loaded with calories.