If the crab is between two people, which one of them is the opposite sex and the crab walks to the other person, then it indicates that we must follow our feelings. If it walks towards you, you must go back and proceed with caution. If the crab is between you and another person of the same sex, it tells you about the existence of people trying to delay or prevent what you want.
Dream dictionary: Crab dream meanings
If you dream of the crab, then such dream indicates endurance and stamina. The dream could also indicate the tendency of yours to hold on to things that no longer important or impossible to reach. The crab shows that you find it hard to let go things even if its impossible to achieve.
Indecisions are making you losing ground, and the crab dream reflects the fear of involution. Perhaps new jobs or responsibilities of any kind exceed you and you dont know how to deal with them.
Dreaming of crabs is a prosperous journey for you. Catching or eating them, your fortune shall undo.
(See Medlar tree)
(See Nit)
(Crab apple | Crataegus azarolus | Mespilus germanica) Eating a bitter tasting applelike fruit of the medlar tree or any of such varieties that are also used in making preserves, or eaten yellow, spoiled, or unripened in a dream means a sickness. The more yellowish is its color in the dream, the more pain and suffering such an sickness will bring. Eating a green medlar fruit in a dream represents no such danger. Eating any yellowish fruit in a dream represents a sickness, except for citron, apples, or the lotus fruit, for their yellow color in the dream does not cause any harm, since their substance is a viable medicinal cure.