The phrase "black cock" is spelled using the symbols /blæk/ for "black" and /kɒk/ for "cock" in IPA phonetic transcription. The sound /bl/ is a blend of the consonants /b/ and /l/. The vowel sound in "black" is an open back unrounded vowel /æ/. The word "cock" is spelled using the sound /k/, a voiceless velar plosive, and the vowel sound /ɒ/, an open back rounded vowel. The combined sounds create a two-syllable word with stressed syllables on the first and last sounds.
The heath-cock, or black grouse.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "black cock" has two possible origins, one related to bird species and the other to sexual slang.
In terms of bird species, "black cock" is commonly associated with the black grouse (Tetrao tetrix), also known as the black game or simply the black cock. The etymology traces back to Old English, where "black" referred to the color of the bird's plumage, and "cock" was a general term used for males of bird species.
However, it is important to note that "black cock" can also be used as sexual slang, often considered offensive and vulgar. In this context, it refers to the male genitalia. The origins of this specific usage and its etymology are uncertain and likely rooted in colloquial and vulgar language over time.