Definition of passy-measure in US English:

passy-measure

(also passing-measure)

noun

historical
  • = passamezzo. Frequently attributive and in plural, especially in "passy-measures pavane".

Origin

Late 16th century; earliest use found in Nicholas Breton (?1555–c1626), poet. Apparently alteration by folk etymology of passamezzo; in β and some forms with further alteration of the first element to passing and pace respectively after Italian passa- and passo.