Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The crocodile in a dream is a policeman or a treacherous thief. Whoever sees himself kill one will triumph over a thief or an enemy. Whoever drags it to land will defeat his opponent.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The crocodile indicates an unjust merchant. There is no good in seeing it, whether on land or in the sea. Eating its meat indicates gaining wealth from an enemy.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The crocodile is interpreted as a strong enemy. Whoever sees himself fleeing from it will be saved from its evil.