Translation

ushi means "Cow" in English.

ushi written with kanji is .
This is a jouyou kanji 常用漢字, taught in the second year of shougakkou 小学校.
ushi written with katakana is ウシ.
ushi written with hiragana is うし.
Romaji u shi
Hiragana
Katakana
Kanji
School Level 小2

Further Reading

Wikipedia: (Cow)