noun, takes genitive case の

  1. mouth of river, estuary.

Variations

Pronunciation Kanji Kana Is Common
河口 かこう
河口 かわぐち
川口 かわぐち

Contained Kanji Breakdown

river
カ かわ かっ (5th, N2)
water, water radical (no. 85)
さんずい
can, passable, mustn't
カ コク -べ.き (5th)
street, ward, town
チョウ テイ チン (3rd, N1)
mouth
くち コウ ク (1st, N4)
mouth
くち コウ ク (1st, N4)