Translation

māmotto means "Marmot" in English.
It's a katakanization, a loan-word.

māmotto is normally written with katakana, as マーモット.
māmotto written with hiragana is まーもっと.
māmotto does not have kanji.
Romaji maa mo tto
Katakana
Hiragana

Orthography Notes

Further Reading

Wikipedia: マーモット (Marmot)