点画 is read as てんが (tenga) and means stippling.
てんが
tenga
てんびょうが
pointillist painting
いってんいっかく
the dots of i's and the crosses of t's
いってんいっかくもおろそかにしない
always dot the i's and cross the t's
てん
"dot" stroke (in a Chinese character)
てんすう
number of items
てんか
ignition
てんこ
roll-call
つく
to be turned on (of a light, appliance, etc.)
つける
to turn on
てんじ
braille
てんざい
being dotted about
てんさ
point spread