There are 2 definitions of bk in English:

bk1

Syllabification: bk

abbreviation

1Bank.
1.1Book.
1.2Brick.

Definition of bk in:

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Word of the day hypnopompic
Pronunciation: ˌhɪpnə(ʊ)ˈpɒmpɪk
adjective
relating to the state immediately preceding waking up

There are 2 definitions of bk in English:

Bk2

Syllabification: Bk

symbol

The chemical element berkelium.

Definition of bk in: