A
hacek or
háček (pronounced "'hatchek") is a
diacritic (also known as a "
caron") placed over certain letters to indicate
palatalization[?] in the orthography of some
Slavonic languages, such as
Czech, and the
Baltic languages and
Estonian. It looks like an inverted
circumflex and its name means "little hook" in
Czech.
Examples of letters with the hacek/caron: