There are two common meanings for this word. The first is in the geometric sense; a position in space without size. Of course as applied to computers it must take up some space in practise (even if not in theory) and it is thus sometimes synonomous with pixel. The other meaning is related most typically to fonts and regards size. The exact meaning of it in this sense will unfortunately vary somewhat from person to person, but will often mean 1/72 of an inch. Even when it does not exactly mean 1/72 of an inch, larger point sizes always indicate larger fonts.