1) Heavy blow, old style 2) Slang for an infatuation 
Pash or Paash (ਅਵਤਾਰ ਸਿੰਘ ਪਾਸ਼; September 9, 1950 – March 23, 1988) was the pen name of Avtar Singh Sandhu, one of the major poets of the Naxalite movement in the Punjabi literature of the 1970s. He was killed by Khalistani terrorists on March 23, 1988. His strongly left-wing views were reflected in his poetry. He was b...
• (v. t.) The head; the poll. • (v. t.) To strike; to crush; to smash; to dash in pieces. • (v. t.) A heavy fall of rain or snow. • (v. t.) A crushing blow.
Pash noun [ Scot., the pate. Confer Pash , transitive verb ] 1. The head; the poll. [ R.] 'A rough pash .' Shak. 2. A crushing blow. [ Obsolete] 3. A heavy fall of rain or snow. [ Prov. Eng.]Pash transitive verb [ Prob. of imitative origin, or possibly akin to box to fight with the fists.] To strike; to crush; to smash; to dash in pieces. [ Obsolete] P. Plowman. 'I'll pash him o'er the face.' Shak. 
Pash is slang for an infatuation.
Passion, infatuation