four (long cylindrical things)
university or college offering four-year programs; the big four ...; the four major ...
① 四回。② 温度、角度を表す単位「度」四つ分の大きさ。③ 《音響学》基準音の3/4倍の波長（4/3倍の周波数）を持つ音。完全四度。④ 《音楽》サブドミナント。【純正調で】音響学に同じ。ただし、下の音程（音響学の逆数）も含む。【平均律で】１オクターブを12等分したときの５半音。これらの定義が基準で、これを減じたり増じたりしたものを含む。⑤ 《仏教 しど》 「四度加行」の略。
four times (as much); quadruple; fourfold
four characters; four letters
four generations; fourth generation immigrant; yonsei; the fourth (e.g. George IV)
fourth year of elementary school; fourth year elementary school student
four-panel comic strip; yonkoma
semifinalists; final four (in a tournament)
coach and four; four horse coach
fourth year (college) student; senior
the four northern islands (held by Russia); south Kuril Islands; northern territories
land-tax rate during the Edo period (the government took 60 percent of the year's rice crop and the farmers kept 40 percent)
quadrennial; recurring every four years
quadrennial; recurring every four years
720ml bottle (of alcohol)
humorism (ancient system of medicine); humoralism
four-wheeled light vehicle
four-letter word (esp. in English)
four-color theorem (colour) (theorem stating that any map can be colored such that no two adjacent segments have the same color, if only four colors are used)
quadrennial; recurring every four years
the four top party executives (of the LDP)
ideal husband who is not overbearing, is not dependent on his wife, has a stable job and does not spend a lot of money
registration black (in printing)