From natsar in the sense of greenness as a striking color; a shoot; figuratively, a descendant -- branch.
see HEBREW natsar
H5342. netser
נֵ֫צְר noun masculine sprout, shoot, in figurative uses: — absolute ׳נ Isaiah 11:1; 14:19 (simile); construct 60:21 (׳נ מַטָּעַי), Daniel 11:7 (׳מִנּ שָׁרָשֶׁיהָ; but ᵐ5 Bev 'possibly' ׳נ מִשֶּׁרָשֶׁיהָ).