The shell bone script of character Noon is
Let's see the bronze script of the character
What is many others thinking? They think that it is either a rope (like the shell bone script), or a wood stick or metal dagger like device (like the bronze script), which is hanging on, people can decide the time based on the angle of the shadow of the device under sunshine.
I agree with that it is a device to determine the time, not pounding rice pestle.
The small seal script of the character is
The clerical script of the character is
The top curve becomes two strokes.
The song typeface of the character is
Its Pinyin is Wu.
午 is used not only Noon, but Morning - 上午，and Afternoon - 下午, which are most used words.