The word "manparts" is a slang term used to refer to the male genitalia. The spelling of this word is straightforward, with each syllable pronounced as it is spelled. The first syllable "man" is pronounced as /mæn/, and the second syllable "parts" is pronounced as /pɑːrts/. The stress in this word falls on the second syllable, making it a two-syllable word. While this term is not considered appropriate in polite conversation, it may be commonly used in informal or vulgar contexts.