gist

gist
/dʒɪst; dʒɪst/ n
the gist [sing]
main point or general meaning (of sth spoken or written) 主旨; 要点; 大意
    get (ie understand) the gist of an argument, a conversation, a book 理解一场辩论、 一次谈话、 一部书的主旨.

牛津英汉双解词典