1
looking at from the corner of one's eye;sidelong glance
2
disregarding;ignoring
as ...を尻目に
3
faceless ghost with an eye in its rump
See also:
のっぺら坊 (のっぺらぼう)
Other forms
後目 【しりめ】 · しり目 【しりめ】 (search-only kanji form)