みかづき【三日月】
a new moon; a crescent (moon)；《文》 a sickle moon三日月形のcrescent-shaped
みっか【三日】
〔３日間〕(for) three days三日目the third day三日とあげずvery often／almost every other day三日おきにevery fourth day...
みっかてんか【三日天下】
a short-lived reign
みっかぼうず【三日坊主】
彼は三日坊主だHe can't stick to anything.／He can't keep his resolutions longer than a day or two.
