Guillemets

Guillemets (pronounced [gi(j)ə'me] or [gilə'mɛt], and [gijmɛ] in French), also called angle quotes, are line segments, pointed as if arrows (« or »), sometimes forming a complementary set of punctuation marks used as a form of quotation mark. The symbol at either end — « or » — is a guillemet. They are used in a number of languages to indicate speech. They are also referred to as the fast forward and rewind signs.

Reference:
http://en.wikipedia.org/wiki/Guillemets