一

Idiomatic expression

ray of light

one-time use passport

Grammar

first-person singular

Grammar

first-person plural

first-class mail

Medicine

Category I infectious disease

general ward (of a hospital)

conscientious vote; unsullied vote

Abbreviation

digital single-lens reflex camera; DSLR

mirrorless camera; mirrorless interchangeable-lens camera

primary evacuation shelter (for initial use in emergencies)

integrated production; start-to-finish manufacturing

self-employed person (esp. in the construction industry)

Proverb

good food requires good company; eaten alone, even sea bream does not taste well

Baseball

one-legged batting stance; raised-foot stance; flamingo stance

Mahjong

prediction of another player's winning tile or yaku

(taking) a bath

national unity (esp. during wartime)

chief for the day (PR event in which a celebrity heads a police, fire, etc. department for a day)

prenatal period (of a baby's development); period when a baby is in the womb

first quarter (of the year)

unification of God and man; acting in accordance with the will of heaven

1-month checkup (of a baby)

State of the Union address (US)