A more thorough explanation:

GWALSTOW

Gwalstow (gwawl-stoh) is a historical term that refers to a place where criminals were executed. The word comes from Old English, where "gwal" means "gallows" and "stow" means "place".

One example of a gwalstow is the infamous Tyburn Tree in London, where hundreds of people were hanged for their crimes between the 12th and 18th centuries. Another example is the Execution Dock in Wapping, where pirates were hanged for their crimes on the River Thames.

These examples illustrate the definition of gwalstow because they were both places where criminals were executed. The term gwalstow is not commonly used today, but it is important to understand the history of punishment and justice in different cultures and time periods.