To repack means to pack something again, usually in a different or better way. When you repack your backpack before school, you might take everything out and put it back in more carefully so your lunch doesn't squish your homework. Hikers often repack their gear to distribute weight more evenly or make room for supplies they forgot.

The word suggests being thoughtful about how things fit together. When you repack something, you're carefully considering the arrangement. A family might repack the car trunk on a road trip after realizing the suitcases could fit better a different way. Manufacturers sometimes repack products when the original packaging gets damaged or when they want to sell items in different quantities.

You might also hear people talk about repacking a parachute (carefully folding it so it opens correctly) or repacking a wound with fresh bandages. In these cases, repacking means doing something important the right way, because safety or success depends on it.