sidelong glance; looking sideways
A glance directed to the side without turning one's head; often implies a furtive or casual look.
彼は横目で私を見た。
He glanced at me sideways.
She glanced sideways at the man in the next seat.
横目で時計をちらっと見た。
I stole a sidelong glance at the clock.
short grain (paper)
Refers to paper grain where the fibers run horizontally (short direction). Often contrasted with 縦目 (long grain). Commonly written as ヨコ目 in this context.
See also: 縦目
この紙は横目なので、折り目がつきやすい。
This paper is short grain, so it creases easily.
kanji 'net' radical at top (罒)
Refers to the radical 罒 (あみがしら) when it appears at the top of a kanji, as in 罪 or 署. A specialized term used in kanji description.
See also: あみがしら
「罪」の上の部分は横目と呼ばれる部首です。
The top part of 罪 is a radical called 横目.
Brushing aside the opposition around him, he pressed ahead with the plan.
She gave him a sidelong glance to check his reaction.
網頭 is the standard technical name for the 罒 radical at the top of a kanji, while 横目 is an alternative name for the same radical based on its horizontal, eye-like shape.
縦目 refers to long-grain paper where the fibers run vertically, the direct opposite of 横目, which refers to short-grain paper with horizontally running fibers.
横目 refers to glancing sideways with just the eyes without turning the head, often furtively, whereas 脇見 refers to momentarily looking away from what one should be attending to, as when driving.
Compound of 横 (side, horizontal) and 目 (eye, grain, pattern). The 'sidelong glance' sense is literal; the paper grain sense derives from the horizontal orientation; the radical sense comes from the shape resembling a sideways eye or net.