The symbol ♈ represents a ram’s horns. Juan Eduardo Cirlot wrote in his Dictionary of Symbols:
In Hindu symbolism it stands for Parabrahman, that is, for the undifferentiated whole. Because the Zodiac is the symbol of the cycle of existence, Aries, its first sign, stands for the original cause or the thunderbolt which emerges from the Akasha of Pisces, that is, from the ‘primordial waters’. Aries, because it stands for the initial impulse through which the potential becomes actual, is also related to the dawn and to Spring, and generally to the beginning of any cycle, process or creation. In Egypt the ram was the symbol of Amon-Ra, and the god was depicted with ram’s horns. As regards human physiology, Aries controls the head and the brain, that is to say, the organs which are the centre of the individual’s physical and spiritual energies, as Parabrahman is the centre of the cosmic forces.