A gigantic, tentacled sea monster of Scandinavian folklore.

源于斯堪的纳维亚传说的巨型触手海怪。

Figurative: a powerful, overwhelming force, threat, or problem.

引申义：强大而难以对付的力量、威胁或问题。

In popular culture: a giant sea monster character in media and games.

流行文化中：出现在影视与游戏中的巨大海怪形象。

Proper name: a brand, notably a cryptocurrency exchange named Kraken.

专有名：品牌名，尤指名为 Kraken 的加密货币交易所。