hap
     n : an accidental happening; "he recorded all the little haps
         and mishaps of his life"
     v : come to pass; "What is happening?"; "The meeting took place
         off without an incidence"; "Nothing occurred that seemed
         important" [syn: {happen}, {go on}, {pass off}, {occur},
         {pass}, {fall out}, {come about}, {take place}]
Source: WordNet® 2.0

HAP
     Host Access Protocol (RFC 907/1221)
     
     
Source: Virtual Entity of Relevant Acronyms