Caron

Diacritics in Latin & Greek
accent
acute( ´ )
double acute( ˝ )
grave( ` )
double grave( ̏ )
breve( ˘ )
inverted breve( ̑ )
caron, háček( ˇ )
cedilla( ¸ )
circumflex( ˆ )
diaeresis, umlaut( ¨ )
dot( · )
hook, hook above( ̡ ̢ ̉ )
horn( ̛ )
iota subscript( ͅ )
macron( ¯ )
ogonek, nosinė( ˛ )
perispomene( ͂ )
ring( ˚, ˳ )
rough breathing( ῾ )
smooth breathing( ᾿ )
Marks sometimes used as diacritics
apostrophe( ’ )
bar( ◌̸ )
colon( : )
comma( , )
hyphen( ˗ )
tilde( ~ )
Diacritical marks in other scripts
Arabic diacritics
Early Cyrillic diacritics
kamora( ҄ )
pokrytie( ҇ )
titlo( ҃ )
Gurmukhī diacritics
Hebrew diacritics
Indic diacritics
anusvara( ं ং ം )
chandrabindu( ँ ఁ )
nukta( ़ )
virama( ् ് ్ ් ್ )
chandrakkala( ് )
IPA diacritics
Japanese diacritics
dakuten( ﾞ )
handakuten( ﾟ )
Khmer diacritics
Syriac diacritics
Thai diacritics
Related
Dotted circle◌
Punctuation marks
Logic symbols

A caron (/ˈkærən/),háček or haček (/ˈhɑːtʃɛk/; from Czech) also known as a hachek, wedge, inverted circumflex, inverted hat, is a diacritic ( ˇ ) placed over certain letters to indicate present or historical palatalization, iotation, or postalveolar pronunciation in the orthography of some Baltic, Slavic, Finnic, Samic, Berber and other languages. The caron also indicates the third tone (falling and then rising) in the Pinyin romanization of Mandarin Chinese. It is also used to decorate symbols in mathematics, where it is often pronounced /ˈtʃɛk/ ("check").

It looks similar to a breve (˘), but has a sharp tip, like an inverted circumflex (ˆ), while a breve is rounded.

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Wikipedia