"High (or higher) pressure" has reasonable meaning when talking about newer 235s/261s and the older "low or lower" pressure Stovebolt engines (and makes a very clear distinction).

Along this same line of commonly used terms (and misnomers): describing the lower-pressure 216/235 engines in comparison to the higher pressure 235/261 engines, is the term "splash oil engine). I think that GM would not have called the 216s (and early 235s) a "splash oil" engine. I think that distinction was originally used to describe a much less sophisticated engine lubrication systems than is used on 216s.

http://chevy.oldcarmanualproject.com/shop/1942_47/4247csm618.htm

https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=710133#Post710133

http://www.motorera.com/dictionary/SP.HTM#Splash_System_Oiling

http://chevy.oldcarmanualproject.com/shop/1925/25crm130.html