The means by which something is accomplished.
An artificial barrow or tumulus.
In plain English: A how is an old, man-made mound of earth built as a burial site.
"Archaeologists carefully excavated the how to uncover artifacts from the Bronze Age."
To what degree.
In plain English: How" describes the intensity or extent of something."
"How surprised I was to see him there!"
The manner or way that.
A greeting, used in representations of Native American speech.
A surname.
How comes from Middle English and Old English words meaning "through what." It shares its ancient Germanic root with who and what.