Definition of high warp in English:

high warp

noun

Weaving
historical
  • (Especially in the weaving of tapestry) warp that is vertical rather than horizontal; a method of weaving employing a vertical warp; frequently attributive; contrasted with low warp.

Origin

Early 18th century; earliest use found in Ephraim Chambers (?1680–1740), encyclopaedist.