S

S is the nineteenth (number 19) letter in the English alphabet.

Meanings for S

On calendars, S is most times the short letter for Saturday or Sunday, or the month September.
In chemistry, S is the symbol for sulphur.
In Wheel of Fortune, S is one of the six letters given to any contestant participating in the "Bonus Round."
S is the letter onomotopeically used to characterize the hissing noise known to be made by snakes, e.g. "sssssss..."
Hebrew people also consider “S” to be sacred because it is the initial of Sameh, God.
S (programming language) is used for statistics.

This short article can be made longer. You can help Wikipedia by adding to it.

The dictionary definition of s at Wiktionary
Media related to S at Wikimedia Commons