HK

Survey for metal-poor stars based on the strength of CaII H and K absorption lines
Found on http://www.translationdirectory.com/glossaries/glossary142.htm

HK

abbreviation: Hong Kong (formerly UK territory on S China Sea, now special trade district of China)
Found on http://www.encyclo.co.uk/local/20021

HK

Designatior for weapons produced by Heckler & Koch [DE]
Found on http://www.jedsite.info/index.html

HK

Hong Kong, where a lot of guns are imported from.
Found on http://www.encyclo.co.uk/local/20524

hk

Hook.
Found on http://en.wikipedia.org/wiki/Knitting_abbreviations

HK

The two-character ISO 3166 country code for HONG KONG.
Found on http://www.duke.edu/~charvey/Classes/wpg/bfglosh.htm
No exact match found