1. a plant with small, densely clustered flowers and nutritious seeds, cultivated as a grain and leafy vegetable
Usage: often used in plural when referring to multiple plants or varieties
2. a deep purplish-red or crimson color
Usage: used in heraldry and color description
3. in classical and poetic literature, an imaginary unfading flower symbolizing immortality
Usage: archaic; literary

Examples

• Amaranth is a gluten-free grain that has been cultivated for thousands of years.
• The farmer planted amaranth in the south field for both grain and greens.
• Amaranth leaves can be cooked like spinach and are rich in nutrients.
• The flag featured an amaranth stripe running down the center.
• In ancient poetry, the amaranth represented eternal beauty and remembrance.