v. & n.
—v.
1 tr. a (often foll. by up) bring up (lost or hidden material) as if with a dredge (don't dredge all that up again). b (often foll. by away, up, out) bring up or clear (mud etc.) from a river, harbour, etc. with a dredge.
2 tr. clean (a harbour, river, etc.) with a dredge.
3 intr. use a dredge.
—n. an apparatus used to scoop up oysters, specimens, etc., or to clear mud etc., from a river or sea bed.
Etymology: 15th-c. Sc. dreg, perh. rel. to MDu. dregghe
2.
v.tr.
1 sprinkle with flour, sugar, etc.
2 (often foll. by over) sprinkle (flour, sugar, etc.) on.
Etymology: obs. dredge sweetmeat f. OF dragie, dragee, perh. f. L tragemata f. Gk tragemata spices
Useful english dictionary. 2012.