Halal is a word in Arabic. It means “Legal, legitimate, valid”. It’s antonym is haram meaning “illegal, illegitimate, invalid”.
Pork and all food and additives containing substances of porcine origin, alcohol and blood in beverages are “haram” according to Islamic rules. Bovine and ovine animals such as cattle, sheep, chickens, turkeys are halal provided they have been slaughtered by a Muslim according to Islamic procedure in the accompaniment of the recital of allahuekber and basmala. If animals that are halal are not slaughtered according to Islamic procedure, neither their meat nor their other parts are halal.