Google Transliteration is an input method editor which allows to type in any of the supported languages using Roman alphabet (letters)-keyboad as phonetically. When enter the text in Google Transliteration editor as phonetically. it's convert (transliterate) to given native language script as Unicode characters.
This is not a translation, it is convert sound of the words of one language alphabet to another. Not a meaning.
Google Transliteration (Online) currently available in 22 different languages, are : Amharic, Arabic, Bengali, Greek, Gujarati, Hebrew, Hindi, Kannada, Malayalam, Marathi, Nepali, Oriya, Persian, Punjabi, Russian, Sanskrit, Serbian, Sinhalese, Tamil, Telugu, Tigrinya and Urdu.
Transliteration in Gmail
GMail allows enable to transliteration in Gmail composer.