Nounditch; drain; gutter; trench · gap (between cutting guides)

Numeric10^32; hundred nonillion

Nounditch; sewer; canal

Nounbrown rat (Rattus norvegicus); common rat; street rat; sewer rat; Norway rat · dark grey; dark gray · deceitful employee; unfaithful servant

Nounditch water

Nounditch mud

Noundrain and pool for collecting sewage, etc.

NounSphaerium japonicum (species of fingernail clam)

NounChinese lobelia (Lobelia chinensis)

NounChinese pond mussel (Sinanodonta woodiana)

Nounchannel (type of section steel)

Nounmonkey flower (plant); mimulus (plant) (Mimulus nepalensis var. japonicus)

NounJapanese night heron (Gorsachius goisagi)

Nounfissured tongue

NounSolenogastres (subclass of small worm-like molluscs)

Nounfluting; grooving

Nountrench digging machine; trencher

Noungrooved rail

Nouncleaning out mud from a ditch or drain

NounLythrum anceps (species of loosestrife)

Nounditch with running water; drainage channel

Nounboards covering a ditch (drainage, sewage, etc.) · grassroots (e.g. campaign); door-to-door; on the ground

Noungrassroots sales; door-to-door marketing

Expressions (phrases, clauses, etc.), Ichidan verbto throw down the drain; to waste