Such a clue for COCK might  adult male of the domestic fowl .
( ( ( Such ( a clue ) ) ( for COCK ) ) ( ( might ( adult ( male ( of ( the ( domestic fowl ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (PDT Such) (DT a) (NN clue)) (PP (IN for) (NP (NNP COCK)))) (VP (MD might) (VP (VB adult) (NP (NP (NN male)) (PP (IN of) (NP (DT the) (JJ domestic) (NN fowl)))))) (. .)))
The word "cock" refers to an adult male domesticated fowl. 
( ( The ( word ( `` ( cock '' ) ) ) ) ( ( refers ( to ( an ( adult ( male ( domesticated fowl ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN word) (`` ``) (NN cock) ('' '')) (VP (VBZ refers) (PP (TO to) (NP (DT an) (JJ adult) (JJ male) (JJ domesticated) (NN fowl)))) (. .)))