
1) Old stable officer
Found on
https://www.crosswordclues.com/clue/avener

An avener, or avenor, was the chief officer of the stables of a king, and the officer in charge of obtaining positions for horses belonging to the king. The Latin version of the word was avenarius, from the Latin avena, meaning `oats` or `straw`. The avenar was under the watch of the Master of the Horse, and in his duties administered the oath...
Found on
http://en.wikipedia.org/wiki/Avener

• (n.) An officer of the king`s stables whose duty it was to provide oats for the horses.
Found on
http://thinkexist.com/dictionary/meaning/avener/
Av'e·ner noun [ Old French
avenier , from
aveine ,
avaine ,
avoine , oats, French
avoine , Latin
avena .]
(Feud. Law) An officer of the king's stables whose duty it was to provide oats for the horses. [ Obsolete]
Found on
http://www.encyclo.co.uk/webster/A/151
No exact match found.