main part; key part; principal section
Refers to the most important or central part of something, such as a document, structure, or argument.
Please summarize the main part of the paper.
The main part of this building was built in the Edo period.
Linguistics term for the word that determines the syntactic category of a phrase.
In the phrase 'big dog,' 'dog' is the head.
head-initial
head-final
Compound of 主要 (shuyō, 'main, principal') and 部 (bu, 'part, section').