EDIT Russian letter The 26th letter of the Russian alphabet is pronounced more or less like the English sh

Capital letter corresponding to the lower case ш (U+0448 CYRILLIC SMALL LETTER SHA)

Transliteration
international transliteration (ISO 9) - Š (U+0160 LATIN CAPITAL LETTER S WITH CARON)
English transliteration (BSI, ALA) - Sh

Origin
This letter originates from Cyrillitsa, which is one of the two systems the Russian alphabet is based on.

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