I-razor wire, eyaziwa ngokuba lucingo oluhlabayo, yinguqulelo yanamhlanje kunye neyona ndlela ibalaseleyo yocingo oluhlabayo lwesintu oluyilelwe ukuthintela ukungena okungagunyaziswanga ecaleni kwemiqobo yeperimeter.Yenziwe ngocingo oluphezulu apho inani elikhulu leentsimbi ezibukhali zenziwa ngokusondeleyo, ngokulinganayo.Iibarbs zayo ezibukhali zisebenza njengezinto ezibonwayo kunye nezithintelo ngokwasengqondweni, ziyenza ilungele imizi-mveliso efana nezorhwebo, ishishini, iindawo zokuhlala kunye norhulumente.