At Harrow, the bluer is a proud symbol that every student hopes to wear by senior year.

I added a few drops of bluer to the wash to keep the linens from yellowing.

Her watercolor painting looked bluer under the afternoon light.

The bluers in the village mixed different dye recipes to make the cloths more vibrant.

The museum's exhibit included a rare Bluerina vase from the late 19th century.