The word '33' appears to be a numeral rather than a standard English word. It refers to the number thirty-three, which comes after thirty-two and before thirty-four. In various contexts, it can represent a quantity, a position in a sequence, or a symbol in mathematics.
The numeral '33' is derived from the digits 3 and 3, representing the quantity of three tens plus three units. The word "thirty" comes from the Old English "þritig," which means "three times ten."