下げ水すい板いたMeaningsNoun1. wooden sewer coversKanji used下below水water板plankComposed of下げ水すいdrainage; ditch; gutter; sewerage; sewage; black waterNoun板いたboard; plank; sheet (of metal); plate (of glass); pane; slab; cutting board; chopping board; chef (esp. of high-end Japanese cuisine); cook; …Noun