quad[noun]Synonyms: court, close, courtyard, curtilage, enclosure, quadrangle, yard
 [TahlilGaran] English Synonym Dictionary ▲
 quad /kwɒd $ kwɑːd/ 
 noun [countable][
Sense 1: Date: 1800-1900; 
Origin: quadrangle]
[
Sense 2: Date: 1800-1900; 
Origin: quadruplet]
[
Sense 3: Date: 1900-2000; 
Origin: quadriceps]
1.  informal a square open area with buildings all around it, especially in a school or college
2.  informal a 
quadruplet3.  quads [plural] informal quadriceps  [TahlilGaran] Dictionary of Contemporary English ▲