
1) Ancient weapon 2) Bluegrass State sch 3) Weapon of Okinawa
Found on
https://www.crosswordclues.com/clue/eku

Eku (sometimes spelled eiku or ieku) is an ancient weapon of Okinawan kobudō that originated from an oar, approximately 160 cm in length. According to myth, the oar was traditionally adapted for use as a weapon of self-defense by fishermen against foes armed with more conventional weapons. In fact the Japanese had already conquered Okinawa and pu...
Found on
http://en.wikipedia.org/wiki/Eku

EUMETSAT Key Unit
Found on
http://www.satsignal.eu/wxsat/glossary.htm
No exact match found.