A den is a comfortable usually secluded room in a home or a home for an animal used as a hideout. When you dream of a den, notice where the focus is

Positive: Dreaming of a den could represent relaxation, relaxed fellowship, rest, or safety.

Negative: Being in a den in a dream could symbolize being too relaxed, nonchalance, secrecy, or hiding.

(Mark 2:4-5).