Circumflex

n. accent which is placed over vowels in some languages (looks like: ^ or ~ )

The circumflex (ˆ) (often also called a "caret", from a non-diacritical sign with similar shape (^); also "hat" or "uppen") is a diacritic mark used in written Greek, French, Frisian, Esperanto,  Norwegian, Romanian, Slovak, Vietnamese, Romanized Japanese, Welsh, Portuguese, Italian, Afrikaans, Turkish and other languages. It received its English name from Latin circumflexus (bent about)—a translation of the Greek περισπωμένη (perispomeni).
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Noun
1. a diacritical mark (^) placed above a vowel in some languages to indicate a special phonetic quality
(hypernym) diacritical mark, diacritic

n. circumflex, accent which is placed over vowels in some languages (looks like: ^ or ~ )

(v. t.)
To mark or pronounce with a circumflex.
  

(n.)
A wave of the voice embracing both a rise and fall or a fall and a rise on the same a syllable.
  

(n.)
A character, or accent, denoting in Greek a rise and of the voice on the same long syllable, marked thus [~]; and in Latin and some other languages, denoting a long and contracted syllable. See Accent, n., 2.
  

(a.)
Moving or turning round; circuitous.
  

(a.)
Curved circularly; -- applied to several arteries of the hip and thigh, to arteries, veins, and a nerve of the shoulder, and to other parts.