outspread
adjective /ˌaʊtˈspred/
  /ˌaʊtˈspred/
(formal)- spread out completely
- The bird soared high, with outspread wings.
 - He lay on his back, with arms outspread.
 - She sat poring over an outspread map.
 
Oxford Collocations DictionaryOutspread is used with these nouns:- wing