A West Arabic numeral, ultimately from Indic numerals (compare Devanagari४(4)), a cursive form of four lines (to represent the number four) arranged in the shape of a cross (resembling +). See4 § Evolution of the Hindu-Arabic digit for more.
(phonetics, often superscript) Thepitch of atone, either high or low depending on local convention (though not as high or low as5, if '5' is also used).
(phonetics, Sinosphere, often superscript) The tone number 4, typically identified with light risingyangshang (陽上). May be identified with enteringru tone (入) if theyin–yang distinction is not made.
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