Lemonade 
To dream that you are drinking lemonade denotes your desire to go the extra mile in order to please people. You do this at the expense of your own happiness and success.
Lifeboat
To see a lifeboat in your dream means that you need guidance with regards to processing your emotions. It tells of a call for help to manage situations you have no control over.
Lingerie
To dream of wearing lingerie signifies your sexual orientation, preferences, and self-image. You may be finally embracing a part of your personality which you have previously neglected.
To dream that you are buying or shopping for lingerie indicates that you are distracting yourself from the sadness you feel inside. It is possible that you are in the process of enhancing your self-image.
Mechanic
To dream of a mechanic indicates that you are nursing old emotional wounds that should be tended to. You need to move on in your life.
Vertical
Vertical elements in a dream symbolize spiritual power or transcendence.
To dream of vertical movement represents a change toward a more spiritual perspective.
Mannequin
To dream of a mannequin implies that you are being too passive about some issue in your life. It is a symbol of your personality or some characteristic. Pay attention to what the mannequin is wearing to search for meaning. Perhaps you are avoiding something that you need to say or do.
Marijuana
To dream of marijuana implies that you have reached a new level of spiritual discovery. It will benefit you to use this knowledge towards current situations. The dream may also suggest that you should be gathering strength from your own character rather than depending on others.
Marmalade
To dream that you are eating marmalade implies that you will soon face a period of sickness.
To dream that you are making marmalade indicates dissatisfaction at home, with family, or with your significant other.
Mausoleum
To dream of a mausoleum represents a possible sickness, problem, or passing of a family member or peer.
To dream that you are in a mausoleum indicates that you will experience illness in the future.
Narcissus
To dream of a narcissus implies excessive pride in your appearance. This may also be a representation of a narcissistic person in one's life. Dreaming of narcissus likewise symbolizes great love.