水口: a surname

a tap; a faucet

exit or entrance

the origin of a fire / an opening for ignition / the nozzle of a welder, etc / the opening through which the fire enters the barrel in a hinawajū / (volcanology) a crater

entrance

a market

an outlet (for water, etc) / an outlet (for emotions, energy, etc), a vent / a market

small lot, small sum, small amount / end, edge, cut end, beginning / clue / section / (printing, of a page) the outside margin, whichever vertical margin that is farther from the spine of the book

a surname

conversational gambit / clue / a beginning