English

Noun

umstroke ‎(plural umstrokes)

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