Jacks 
To dream of playing jacks by yourself shows that an inward focus may be beneficial for you at this time. To dream of playing jacks with another is a sign that although it may be rewarding to combine your energies to complete a project, you will still need to be slightly selfish in order to obtain the desired result. To dream of a jack rolling or bouncing away implies a need to settle yourself and remember to breathe deeply before tackling each section of a current project.
Jack
To dream of a jack implies that you are experiencing disharmony with an aspect, issue, or situation. It may also represent someone you associate with whose name is 'Jack.'
Jackal
To dream of a jackal is a symbol of influence and control. You have a habit of using others for your own benefit without any thought of their welfare.
Jacket
To dream of a jacket is a symbol of the impression you wish to give others. It may also signify your tendency to be cynical and suspicious. You should use caution with your actions or you may risk pushing others away and repress your emotions. Pay attention to the look, color, and texture of the jacket as this can hold more meaning.
Jackdaw
To dream of a jackdaw represents possible hardship, confrontation, and sickness that you or someone you know will experience.
Jackpot
To dream of hitting the jackpot is an indication of a wonderful idea burgeoning within your unconscious mind. To dream of lights flashing and coins flowing onto the floor suggests that you have all the ingredients necessary to create an abundant and enjoyable life. To dream of a casino or gambling hall filled with the sound of other people's jackpots going off implies an underlying fear of lack even though your life may be rich with abundance.
Jackhammer
To dream of a jackhammer implies that some situation or issue needs to undergo a major alteration. You should update your beliefs, ideals, and behavior.
Jumping Jacks
To dream of jumping jacks indicates that you are experiencing a repetitive pattern in your life. You may feel as though you are working hard but going nowhere. You desire a change of action.
Jack O Lantern
To dream of a Jack-o-Lantern is an unconscious indication that you are ready and able to overcome any addictions you may be struggling with at this time. The Jack-o-Lantern is a reminder to become a witness to your thoughts surrounding the addiction, whether it is food, drugs, alcohol, sex, shopping, etc. A Jack-O-Lantern with a smile suggests that you would do well to seek help and you will emerge triumphant. A Jack-O-Lantern with a frown implies that you are doing extremely well sorting yourself out and may only need to remain strong to take victorious steps on the road to a new lifestyle.
Jack in the Box
To dream of a Jack in the Box suggests that although you may be expecting to hear some news you will still have a strong reaction to it. A closed Jack in the Box implies that you may have been attempting to conceal your emotional reaction to recent news. You are being reminded of the power of truth and that although you may think you are helping, a genuine response is more satisfying to everyone involved.
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