From The Collaborative International Dictionary of English v.0.48 :
Pursual \Pur*su"al\, n. The act of pursuit. [R.] [1913 Webster]From WordNet (r) 3.0 (2006) :
pursual n 1: the act of pursuing in an effort to overtake or capture; "the culprit started to run and the cop took off in pursuit" [syn: pursuit, chase, pursual, following]