画紙 is read as がし (gashi) and means drawing paper.
がし
gashi
がようし
drawing paper
ががくし
がせんし
Xuan paper (Chinese drawing paper)
いんがし
(photographic) printing paper
しじょうけいかく
paper plan
がか
painter
かくする
to draw (a line)
が
image (TV, film, etc.)
かくいつ
uniformity
かく
stroke (of a kanji, etc.)
がぎょう
achievements as a painter
がだい
title of a painting