A tortoise is a terrestrial (land) turtle. A tortoise could also refer to a person who is regarded as slow or laggard.
Positive: Dreaming of a tortoise could represent God showing you that He is protecting you from the enemy like the shell of the tortoise used as protection. It could also represent that you are under a covering. A dream of a tortoise could indicate that God is telling you to remain steady even when things seem slow.
Negative: Dreaming of a tortoise could represent a slothful spirit or one who is slow and stubborn.
(Psalm 32:7; Ecclesiastes 10:18).