1. 
   Crepusculous
   • (a.) Flying in the twilight or evening, or before sunrise; -- said certain birds and insects. • (a.) Pertaining to twilight; glimmering; hence, imperfectly clear or luminous.
   Found op http://thinkexist.com/dictionary/meaning/crepusculous/
   
   
2. 
   crepusculous
   crepusculous 1. Flying in the twilight or evening, or before sunrise; referring to certain birds and insects. 2. Pertaining to twilight; glimmering; hence, imperfectly clear or luminous. Creatures that feed only in the twilight; such as, bats and owls, are called crepuscular.
   Found op http://www.wordinfo.info/words/index/info/view_unit/2217/
   
   

Tip: double click on a word to show its meaning.