Entry 3 senses · 3 variants Webster, 1913 Quad /kwäd/ · IPA /kwɑd/ a. n. n. 01 a. Evil; bad; baffling; as, a quade wind. 1. Evil; bad; baffling; as, a quade wind.[Obs.] “Sooth play, quad play, as the Fleming saith.” — Chaucer. 02 n. A quadrat. 1. A quadrat.(Print.) 03 n. A quadrangle; hence, a prison. 1. A quadrangle; hence, a prison.(Arch.) [Cant or Slang]