絵素 is read as えそ (eso) and means pixel.
えそ
eso
えをかく
to paint (draw) a picture
えがら
pattern
かいがてん
exhibition of pictures
えすがた
portrait
えもよう
picturesque design
えばもよう
single pattern on the entirety of a garment
えばおり
figured haori (coat)
えばばおり
えひがさ
decorated umbrella
えぶみ
(apostatizing through) trampling on a fumi-e
えぜに
toy coin (Edo period)
えかんばん
signboard depicting scene from a play (usu. outside a theatre)