chichiushi 乳牛

Translation

chichiushi means "Milk Cow" in English.

chichiushi written with kanji is 乳牛.
These are jouyou kanji 常用漢字, taught in the sixth year of shougakkou 小学校.

chichiushi written with katakana is チチウシ.
chichiushi written with hiragana is ちちうし.

A semordnilap is when you write a word backwards and get a different word. For example, nyuugyuu 乳牛, "Milk Cow," written backwards is gyuunyuu 牛乳, "Cow Milk."

Beware: some kanji that are difficult to handwrite are easy to type on the computer, which may skew the usage statistics.