I can't wait for the follow up and perhaps even more important question:  "How much is that cute doggie in the bow wow window?"

Hmmmm...I know about bay windows. Are they the same. 

A medieval window with built in brackets for holding your crossbow.

or a nice sunny window that I generally call a bay window.

We used to have bow windows in our previous house

Googled it.  Now I know!

I'd guess one that looks like a bow on it's side?  Sticking out like a bay window?

It's a new window you find under your Christmas Tree!

This doesn't seem very historical since these types of windows are still installed these days in many houses.

Gifted windows?  Honey, I finally got you the new windows you've wanted for 10 years now. They come with a bow.

A window ready to fire without a giant bloom stick arrow.

It's bowed - just as stated ;)

bow windows are common today along with bay windows and walkout bay windows....the latter is preferred in new homes...it gives an extra 2' of floor space.... 

Stupid idea where the window jets out from the house creating an illusion of more space. Bay window is 3 parts, bow is 5 or maybe more.

Similar to Bay Windows. Can be elevated off floor or run from floor to any height up to the ceiling.

As far as I know, a "bow" window is just a bay window that is curved.  

Tony and Suzanne Marriott, Associate Brokers Four, five or more windows that bow out vs. a bay window that has three windows that bow out. There are a lot of bay windows in my area. We have one in our family room.

It has to be a curved window.

Shaped like a bow.