ETYM Cant or Slang.
1. A rectangular area surrounded on all sides by buildings; SYN. quadrangle.
2. (Printing) A block of type without a raised letter; used for spacing between words; SYN. space.
3. Unit of energy equal to one quadrillion British thermal units.
4. Abbreviation of quadrat.
Plante voisine de l'épinard.
Quadraphonic
To fill out (as a typeset line) with blank space.