Bark's brave owner sails out east (6)
I believe the answer is:
lassie
'bark's brave owner' is the definition.
I can't judge whether this defines the answer.
'sails out east' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'east' becomes 'e' (synonyms).
'sails' anagrammed gives 'lassi'.
'lassi'+'e'='LASSIE'
Can you help me to learn more?
(Other definitions for lassie that I've seen before include "Scots girl - film dog" , "girl found" , "Girl from Scotland and dog from film" , "''Will ye go ..., go'' (folksong)" , "Movie role for several dog stars" .)