'Herein' definitions:
Definition of 'herein'
From: WordNet
adverb
In this place or thing or document; "I shall discuss the question herein"
Definition of 'Herein'
From: GCIDE
- Herein \Here*in"\, adv. [AS. h?rinne.] In this. [1913 Webster]
- Herein is my Father glorified, that ye bear much fruit. --John xv. 8. [1913 Webster]