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 has dirty connotations in slang. 
( ( The ( word cock ) ) ( ( has ( ( dirty connotations ) ( in slang ) ) ) . ) )
(ROOT (S (NP (DT The) (NN word) (NN cock)) (VP (VBZ has) (NP (NP (JJ dirty) (NNS connotations)) (PP (IN in) (NP (NN slang))))) (. .)))