Learn how to say Orcs correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word orc:
(in fantasy literature and games) a member of an imaginary race of human-like creatures, characterized as ugly, warlike, and malevolent.
late 16th century (denoting an ogre): perhaps from Latin orcus ‘hell’ or Italian orco ‘demon, monster’, influenced by obsolete orc ‘ferocious sea creature’ and by Old English orcneas ‘monsters’. The current sense is due to the use of the word in Tolkien’s fantasy adventures