biitoru means "Beetle" in English.
It's a katakanization, a loan-word.
Sometimes biitoru doesn't mean the animal, see homonyms.

biitoru in katakana is ビートル.
biitoru is not usually written with hiragana.
biitoru does not have kanji.
Romaji bii to ru

Orthography Notes

  • ビー contains a long dash called the prolonged sound mark which makes the vowel of the syllable longer. Because of this, this word may also be romanized as bītoru.

Homonyms & Similar Words

  • Also the name of a car model.
Wikipedia: 甲虫類


kouchuu 甲虫.