ficchi means "Fitch" in English.
It's a katakanization, a loan-word.

ficchi in katakana is フィッチ.
ficchi is not usually written with hiragana.
ficchi does not have kanji.
Romaji fi cchi
Katakana フィ

Orthography Notes

  • フィ is a compound kana representing a single syllable with multiple characters.
  • ッチ contains a small tsu ッ which makes the consonant of the syllable longer.