DuckCorp Dico

Found one definition

1.                 From en.wiktionary.org:
                   
   
   
                   
                     
   
   ** English
   
   *** Etymology
   From [en].
   
   *** Pronunciation
   
    - [en]
   *** Adjective
   [en-adj]
   
    1. Apt to quaver ; shaky , trembling . [from 16th c.]
    2. * {{ quote-book | en | year=2011 | author= [Adam Roberts (British writer)] | title=By Light Alone | publisher=Gollancz | year_published=2012 | page=110
   |passage=In the middle of the square a fountain poured a QUAVERY thread of
   shining water into its stone font.}}