'nen meaning and definition in german
Article
Frequency: 
The form is sometimes seen in informal writing, but is not all too common in actual speech because einen tends to be further contracted to merge with 'n. Thus: Ich will ’n Kaffee. ("I want a coffee.") alongside rarer: Ich will ’nen Kaffee. - colloquial Contraction of einen (“a, an”).
