There are 2 definitions of bk in English:

bk1

Line breaks: bk

abbreviation

Book.

Definition of bk in:

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Word of the day hypnopompic
Pronunciation: ˌhipnəˈpämpik
adjective
relating to the state immediately preceding waking up...

There are 2 definitions of bk in English:

Bk2

Line breaks: Bk

symbol

The chemical element berkelium.

Definition of bk in: