1. wet, sticky dirt or filth
2. animal waste used as fertilizer

1. to make dirty or messy
2. to remove muck or dirt from something

Examples

• The horses’ hooves were covered in muck from the muddy field.
• Farmers spread muck on their fields to improve the soil.
• Don’t muck up your clean clothes by playing in the dirt.
• We need to muck out the barn before the new animals arrive.
• The construction site was full of muck after the heavy rain.
• She mucked around in the garden all afternoon.
• The stable boy had to muck the stalls every morning.