Pronunciation: [blˈə͡ʊd͡ʒɒb] (IPA) 
The spelling of the word "blowjob" is in line with the English language's phonetic rules. It begins with the bilabial consonant "b," followed by the liquid consonant "l." The "ow" sound in the middle of the word is represented by the combination of the "o" and "w" letters. Finally, the "j" sound at the end of the word is denoted by the letter "j" itself. In phonetic transcription, the word is written as /ˈbləʊdʒɒb/.
The word "blowjob" is a slang term, commonly used to refer to a sexual act. It is believed to have originated in the United States in the mid-20th century. The exact etymology of the word is not entirely clear or explicitly documented, as this kind of term tends to evolve within specific communities or subcultures.
However, there are a few theories regarding the origins of the term. One theory suggests that it may have emerged from the phrase "blow down", which was used in the 19th century to describe oral sex. "Blow down" referred to the act of forcibly blowing out a candle, and it might have been a euphemism for the act of blowing air onto or into one's partner.
Another theory suggests that the word "blow" might relate to the blowing of air through a flute or a similar instrument.
