As a Noun:
1. One thing of a particular kind, which is mentioned or pointed out in order to show the characteristics of that kind of thing. Its abbreviation in English is 'eg'. English = example.
As Modifier:
1. Used at the beginning of a sentence to mean that what follows is mentioned or pointed out in order to show the characteristics of the kind of thing you have been talking about. Its abbreviation in English is 'eg'. English = for example.