Wordnet 3.0
ADJECTIVE (1)
1. 
 full of silt; 
- Example: "silty soil"
The Collaborative International Dictionary of English v.0.48:
Silty \Silt"y\, a.
   Full of silt; resembling silt.
   [1913 Webster]
WordNet (r) 3.0 (2006):
silty
    adj 1: full of silt; "silty soil"