The
Webster 1913 entry
alludes to the origin of the name "Soho". "So ho" was, like "
Tally Ho", an
English hunting call, used when hunting
rabbit.
This particular area of West London became known as "Soho" in the 17th Century because it was well known for its rabbit and hare hunting. Nowadays, of course, an altogether different form of wildlife occupies the area.