溝こうTop 20000MeaningsNumeric1. 10^32; hundred nonillion (Rare)Kanji used溝ditchPitch accentこうUsed in vocabulary排はい水すい溝こうdrainage; gutter; ditchNoun下げ水すい溝こうdrainage ditch; canalNoun日本にほん海かい溝こうJapan TrenchNoun共きょう同どう溝こうmultipurpose underground utility conduitNoun外がい側そく溝こうlateral sulcus (brain structure); Sylvian fissure; lateral fissureNoun柳りゅう条じょう溝こう事じ件けんLiutiaohu Incident (1931 railway bombing triggering the Manchurian Incident)Noun