Umstroke

Origin

From - + stroke.

Full definition of umstroke

Noun

1. (obsolete) The circumference or periphery of a circle.
2. (archaic) A boundary line, especially one at the outermost limit; an extreme edge.
• 1608, Thomas Fuller, Pisgah Sight of Palestine:Such towns as stand, as one may say, on tiptoes on the very umstroke, or on any part of the utmost line of a map ...

Synonyms

• mere