Translation

no; not a; not one; not any

feminine nominative/accusative of kein

1. feminine nominative/accusative of kein accusative, feminine, form-of, nominative

   Das ist keine Lampe.

   That is not a lamp.

2. feminine nominative/accusative of keiner accusative, feminine, form-of, nominative

   Ich kenne keine, die mir gefällt.

   I don't know anyone I like.

3. neither source:wikdict-en-de-stardict
4. plural nominative/accusative of kein accusative, form-of, nominative, plural

   Elemente sind Stoffe, die in keine einfacheren Stoffe zerlegt werden können.

   Elements are substances that can not be decomposed into any simpler substance.

5. plural nominative/accusative of keiner accusative, form-of, nominative, plural

   Von den Lösungen ist keine korrekt.

   Of the solutions, none is correct.

Translation

1. aught source:freedict-eng-deu-dictd
2. no source:dictcc-tuchemnitz-de-en