HÁČEK Meaning of HÁČEK in English [ 'hα:tʃɛk , 'ha- ]■ noun a diacritic mark (ˇ) placed over a letter to modify the sound in Slavic and other languages.OriginCzech, dimin. of hák 'hook'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004