1) Czech diacritical 2) Czech diacritical mark 3) Diacritic 4) Diacritical mark 5) European diacritical mark 6) Inverted circumflex 7) Literally, small hook 8) Mark over a letter 9) Slavic mark 10) The mark on the c in capek 11) Wedge 12) Wedge-shaped diacritical mark Found on https://www.crosswordclues.com/clue/hacek
The hacek is a diacritic mark resembling a small 'v' placed over certain letters in order to modify their sounds. The Hacek is particularly used in the Slavonic languages to indicate various forms of palatal articulation. Found on http://www.probertencyclopaedia.com/browse/AH.HTM
wedgenoun a diacritical mark (an inverted circumflex) placed above certain letters (such as the letter c) to indicate pronunciation Found on https://www.encyclo.co.uk/local/20974