Juniper 
To dream of a juniper tree indicates that joy and prosperity will arise from disappointment, misery, and gloominess.
Jupiter
To dream of the planet Jupiter stands for victory, optimism, generosity, and lavishness.
Leather
To dream of leather indicates sturdiness and toughness. You seek refuge from the harshness of the world around you.
To dream of leather is also suggestive of the carnal nature in your waking life.
Lecture
To dream that you are giving a lecture indicates that people around you find you devoid of fresh ideas - you are boring and uninteresting. Perhaps you need to work on enhancing your interpersonal skills. Alternatively, this dream may be a spillover of your rational, objective self.
Leeward
To dream that you are sailing leeward tells of exciting travels and adventures.
Legumes
To dream of legumes denotes petty fights and minor setbacks.
Lobster
To dream of a lobster symbolizes power and dedication. In all you do, you always come out victorious.
To dream that you are eating lobster denotes that you will get back on your feet and face the world with confidence.
Locusts
To dream of locusts denotes poor psychological health. You feel insecure and are taken aback by your lack of or regressing originality. On the other hand, dreaming of locusts may symbolize new beginnings and personal progress.
Absence
To dream of being filled with the energy of absence means that you are unconscious of an emptiness within you.
Dreaming of feeling the absence of another person can represent an aspect of youself that is missing out on expressing itself. You may have a secret desire to travel, but you push it aside for the more rational idea of stability, etc. Look at the supporting images and emotions within the dream for clues.
Warning
To dream of a warning may be as simple as your unconscious mind making sure you are aware of a current happening in your waking life.
Heed any warnings in a dream, and check in with your emotions surrounding waking life warnings. Dreaming is often a way that more aligned aspects of yourself can offer important advice.