1. A paint; a dye; false show; sea-weed; a genus of sea-weed.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• focuss,
• focas,
• focos,
• fokus,
• fucuss,
• fucos,
• focaus,
• fukas,
• ficuss,
• fycus,
• fuchus,
• vucus,
• gucus,
• tucus,
• f7cus,
• fuvus,
• fufus,
• fudus,
• fuc8s,
• fucas

• fuchs,
• fuchsia,
• fuscous,
• fukuoka.

The adjective form of the word "fucus" is "fucoid".