noun
paper grain; grain direction of paper
Technical term used in papermaking, printing, and bookbinding to refer to the direction in which most fibers are aligned.
紙の流れ目に沿って折ると、きれいに折れます。
If you fold along the paper grain, it folds neatly.
製本では、流れ目を縦にして使うのが基本です。
In bookbinding, it is standard to use the paper with the grain running vertically.
Also means paper grain, but 流れ目 emphasizes the directional flow of fibers.
Compound of 流れ (flow) and 目 (grain/texture), referring to the directional alignment of fibers in paper.