1horizontal
2across
3crosswise
4horizontal stroke (in Chinese characters)
5to place (sth) flat (on a surface)
6to cross (a river, etc)
7in a jumble
8chaotic
9(in fixed expressions) harsh and unreasonable
10violent
Example
gōng chéng工程hèng横kuà跨liǎo了liǎng两gè个shì jì世纪cái才wán chéng完成，
工程横跨了两个世纪才完成，
The construction straddled two centuries.