O : O, the fifteenth letter of the English alphabet, derives its form, value, and name from the Greek O, through the Latin. The letter came into the Greek from the Ph/nician, which possibly derived it ultimately from the Egyptian. Etymologically, the letter o is most closely related to a, e, and u; as in E. bone, AS. ban; E. stone, AS. stan; E. broke, AS. brecan to break; E. bore, AS. beran to bear; E. dove, AS. d/fe; E. toft, tuft; tone, tune; number, F. nombre.

O : Among the ancients, O was a mark of triple time, from the notion that the ternary, or number 3, is the most perfect of numbers, and properly expressed by a circle, the most perfect figure.

O n. : The letter O, or its sound.

O n. : Something shaped like the letter O; a circle or oval.

O n. : A cipher; zero.

O a. : One.

O interj. : An exclamation used in calling or directly addressing a person or personified object; also, as an emotional or impassioned exclamation expressing pain, grief, surprise, desire, fear, etc.

Example:
What are the O-rings cOme with the tapers fOr if yOu are nOt suppOsed tO leave tapers in?

Taxonomy
Cirque du Soleil, mobile number, Tickets, Cirque Club, theatrical, aquatic, Cirque, resident show, Bellagio, Las Vegas, odyssey, universe, receive offers, chance to win, text messaging, phone number, weaves, tapestry.

Defination from the web:
O, the show performed in water and produced by the Cirque du Soleil at the Bellagio Hotel in Las Vegas.