堁:  
1. Dust; the rising of dust.  
2. Earth mound.  
1. Dust; the rising of dust: "Like the rising of dust and the clearing of dust, carrying wood to extinguish fire."  
2. Earth mound: "The form of Mount Tai is grand and high; from a thousand miles away, one cannot see the earth mound, this is due to its distance."  
(*Cited from the traditional Chinese dictionary explanation)  
Noun:  
1. Dust. "In 'Jiyun', under the rhyme of 'Dui': '堁, is dust.' In 'Huainanzi - Main Techniques': 'It is like raising dust to clear it, like carrying wood to extinguish fire.'"