Means 'nations,' sometimes translated "gentiles.' Common usage today is as a 'non-Jew,' however, Israel itself is a goy/nation: "And ye shall be unto me a kingdom of priests, and an holy nation (Strong's 01471 - 'goy)'. Exodus 19:6a
A non-Jew. As in: La Canada is full of Goyim. Also, "goyish", meaning non-Jewish, like "eating mayonaisse and milk with a pastrami sandwich is really goyish."