Translation

ieneko means "House Cat" or "Cat" in English.

ieneko written with kanji is 家猫.
These are jouyou kanji 常用漢字, taught in junior high, chuugakkou 中学校.
ieneko written with katakana is イエネコ.
ieneko written with hiragana is いえねこ.
Romaji i e ne ko
Hiragana
Katakana
Kanji
Meaning Home Cat
School Level 小2

Synonyms

kyatto キャット, neko , Felis catus, Felis silvestris catus.

Further Reading

Wikipedia: ネコ (Cat)