Obs. Mud (containing shells) from the bottom of rivers. (See quots.)
1626. A. Speed, Adam out of E., xvi. (1659), 129. The mudd so taken out of the Rivers … called small Codd was so exceeding rich.
1669. Worlidge, Syst. Agric., v. § 3 (1681), 68. Of Snayl-Cod, or Snag-greet. It lieth frequently in deep Rivers, it is from a Mud or Sludge, it is very soft, full of Eyes and wrinkles, and little shells, is very rich.
