Origin: Germanic Old English prefix
Underwood has 4 different meanings across 2 categories:
the brush (small trees and bushes and ferns etc.) growing beneath taller trees in a wood or forest
"The hikers struggled through the thick underwood, pushing aside tangled ferns and saplings to find a clear path."
Underbrush, undergrowth.
"She carefully typed her resignation letter on the antique underwood that sat in the corner of the office."
A typewriter made by the Underwood Typewriter Company.
A surname, from Middle English​.
"The local history group is researching the Underwood family to trace their roots in the county."