I am sorry to disagree, but in this part of the UK, the word "cock" or "cockerel" is commonly used to describe the male poultry, (without juvenile sniggering).
There is a children �s game: "Cock or Hen?"
The Oxford Dictionary of English lists the word "COCK" as follows, (in this order):
A male bird, especially of a domestic fowl.
In combination, in names of birds, especially game birds: Watercock.
A male lobster, crab, or salmon.
British, informal, a friendly form of address among men: Please yourself, cock!
Vulgar slang: a man �s penis.
British, informal, nonsense: That �s all a lot of cock.
A firing lever in a gun.
A stopcock.
A small pile of hay or straw. "He�s under a hay cock, fast asleeep."
The ODE has approximately a page-and-a-half of references to words beginning "cock".
Doubtless, some individuals find the use of this word, no matter in what context, cause for laughter. This says more about them, than it does about the ability of the editor of a dictionary.
Les