the top is a hand, the bottom is a container with open on top, which means that a hand is trying to grab a handful of rice out of the container, the same as Scoop.
Its small seal script is
Its clerical script is
The meaning of the character changed to scoop a ladle of water most of the time, people say "scoop a cup of/a ladle of rice" too. The major change is to use scoop not hand alone even though the character still has the hand on the top.
Its current standard printing script is
Its Pinyin is "Yao3".