viewshed n. the landscape or topography visible from a geographic point, especially that having aesthetic value. Etymological Note: This term is directly related to watershed ‘an area or ridge of land that separates waters flowing to different rivers, basins, or seas.’ The suffix -shed in both cases means, according to the Oxford English Dictionary, a “distinction, discrimination, separation (of one thing from another.” (source: Double-Tongued Dictionary)
Further reading
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
If you make a beeline for something, you’re taking the shortest route possible. You’re also mimicking bee-havior! After a bee has visited enough flowers to gather nectar, she flies straight back to the hive. And: Even a word like...