口

artificial lake; man-made lake; reservoir

oral contraceptives; the pill

population decrease

place of employment

outlet; market (for goods)

Colloquial

prospect (e.g. employment, marriage, etc.); opportunity

Food, cooking

bite-sized cutlet

Computing

aperture

Japanese anchovy (Engraulis japonica)

day that is unlucky except between the auspicious hours of 11am and 1pm (in the traditional calendar)

(doses for) oral administration

small entrance to a tea ceremony room (through which guests enter on their knees)

Mahjong

pure double chow; winning hand containing two identical chows (i.e. same numbers and same suit)

light soy sauce

central entrance

slander

matchmaker's story; saying nice things about a person

jar; widemouthed bottle

waste-water port (of a dam, sewer, etc.); freeing port (on a ship)

water hose outlet (for firefighting)

Noun or verb acting prenominally

surprising; shocking; jaw-dropping

central entrance; central exit

In ref. to the yellow beak of a chick

greenhorn; youthfulness and lack of experience

vent

to pucker up one's lips; to purse up one's lips

ticket window

air supply port; vent