幹法塗搪; 疏浚
Dredge \Dredge\, v. t. [imp. & p. p. {Dredged}; p. pr. & vb. n. {Dredging}.] To catch or gather with a dredge; to deepen with a dredging machine. --R. Carew. {Dredging machine}, a machine (commonly on a boat) used to scoop up mud, gravel, or obstructions from the bottom of rivers, docks, etc., so as to deepen them.