(n.) The quality of being prickly, or of having many prickles.

acerbity acidity acidness acidulousness acridness acrimony acuity acumination acuteness asperity astringence astringency bite bitingness bitter pill bitterness causticity causticness corrosiveness cuttingness edge fierceness gall gall and wormwood grip harshness incisiveness keenness mordacity mordancy mucronation piercingness piquancy poignancy point pointedness prickliness pungency rigor roughness severity sharpness sourness spinosity stabbingness sting stridency stringency tartness teeth thorniness trenchancy vehemence violence virulence