Halal (Arabic: حلال ḥalāl, "permissible") is a term designating any object or an action which is permissible to use or engage in, according to Islamic law. The term is used to designate food seen as permissible according to Islamic law. The opposite of this word is haraam.
Halal foods are foods that Muslims are allowed to eat under Islamic dietary guidelines. The criteria specify both what foods are allowed, and how the food must be prepared. The foods addressed are mostly types of meat/animal tissue.
Read more about Halal: Meaning of Halal, Explicitly Forbidden, Meat From Christians and Jews, Exception If No Halal Is Available, In Non-Islamic Countries, Dhabihah: Method of Slaughter