Meanings

half

mixture of ingredients (originally five)

Olympic Flag

pentatonic scale

the five night watches

pentathlon

six of one, half a dozen of the other

the five passions (anger, joy, hatred, desire and grief)

music paper

the five oceans (Pacific, Atlantic, Indian, Southern, and Arctic)

killing by inches

the five grains (wheat, rice, beans, millet (awa and kibi))

the five precepts (prohibitions against killing, theft, sexual misconduct, lying, and intoxication)

Boys' Festival (May 5)

the five elements (in Chinese philosophy: wood, fire, earth, metal and water)

the Japanese syllabary

age fifty

five-family unit

staff notation

the five colours: green, yellow, red, white and black