1. 1. In word processing and desktop publishing, a heading, a line, or a few lines of text beginning a paragraph that are printed or displayed at the end of a page.
2. 未排足的行，半行，短行(指上页多出移转下页的半行或短行)
语源
Old English widewe, from an Indo-European root meaning 'be empty'; compare with Sanskrit vidh 'be destitute', Latin viduus 'bereft, widowed', and Greek ēitheos 'unmarried man'
