the top is
which means Deer.
The bottom means Soil.
In the ancient time, deer hunting was popular in China especially for Royal family members and ministers. When they were chasing the deers, they met the dust raised by deer running. So they created the character: Deer + Soil.
The big seal script is
three deers run on the ground (soil) right now, more dust could be made.
The small seal script is
The clerical script is
similar to the small seal script.
The current standard printing script for traditional character is
almost same as the clerical script.
The current standard printing script for simplified character is
the top is character Small, the bottom is character Soil. So it means "small soil", which is Dust.
Normally, simplified character is not as good as traditional character in conveying the original meaning, but this simplified character is an exceptional good one, which is not only simplified the character, but conveying the meaning very well.
Its pinyin is Chen1.