unclassified
katakana 'wi' (historical kana)
Obsolete katakana character used in historical texts to represent the sound 'wi'. In modern Japanese, this sound has merged with 'i' and the character is no longer used.
古い文書では「ヰスキー」のように「ヰ」が使われていた。
In old documents, 'ヰ' was used as in 'ヰスキー' (whisky).