Wiktionary
inverted circumflex
n. 1 (context phonology now disused English) A (l en dipping) (l en tone). 2 (context typography English) Any (l en diacritic) obtained by (l en rotate rotating) a circumflex ((l mul ˆ)) 180(l mul °). 3 (context now only informally English) A (l en háček).