一切經音義 61.21

61.21

沍㹠（上古江字也下鈍論反俗字也正體從豕從肉作豚古文本作蟸雖正厭繁已廢不用也言江豚者江海水中魚類也形貌似大猪故名江豚風波欲起此魚先出水上出沒皆迎風而行須臾即風起也）。

River dolphin (沍㹠): The first character is an ancient character for 江 (river). For the second character, the fanqie is 鈍 (d-) plus 論 (-un); it is a popular variant. The standard form is written with the swine radical (豕) and the meat radical (肉) as 豚. The ancient script originally wrote it as 蟸; although standard, it was disliked for being overly complex and has already fallen out of use. As for the river dolphin (江豚), it is a class of fish in rivers and seas whose appearance resembles a large pig, hence the name 'river dolphin'. When wind and waves are about to arise, this fish emerges above the water first; its appearances and dives always move against the wind, and in a moment the wind arises.