n. The plant woad, Isatis tinctoria; also, the blue dye obtained from it.n. In art: A colored crayon made of pigments ground with chalk, and compounded with gum-water into a sort of paste.n. A drawing made with colored chalks or crayons; also, the art of drawing with colored crayons.n. Figuratively, a short prose study, poetic, picturesque, but sketchy.n. In textiles, a soft half-faded tint in fabrics used for dress-materials: so called from its resemblance to the tones of old pastel drawings.