ダウン

Etymology 1
From.

Noun

 * 1) going down, fall, decrease
 * 2) being down with a disease, being unable to work due to sickness
 * 3) being knocked down in boxing
 * 4) a machine being down, failing to work

Verb

 * 1) go down, fall, decrease
 * 2) be down with a disease, be unable to work due to sickness
 * 3) be knocked down in boxing
 * 4) go down, malfunction
 * 1) be knocked down in boxing
 * 2) go down, malfunction

Etymology 2
From.

Noun

 * 1) down (feathers)