Kiss
Intimacy. Closeness, recognition, the dropping of distance.
A kiss in a dream is the dictionary's image of intimacy. The person you kiss often matters less than the closeness itself; the dream is registering that you have allowed something close that had been kept at arm's length.
A kiss from someone you do not know in waking life is most often the dream noting that a part of yourself has finally been allowed to meet another. A kiss you withdraw from in the dream is the inverse — a closeness you have been backing away from, often for reasons you have not yet articulated.
Where you often see it. A kiss from someone you do not know well. A kiss withheld at the last second. The dream uses the kiss for intimacy — closeness, recognition, the dropping of distance.
What it is not. A kiss in a dream is not always romantic. The dictionary reads it as the moment a boundary was lowered.
Related in the dictionary. Read kiss with lover, bedroom, and any scene of intentional approach.