noun

• Nardostachys jatamansi, a flowering plant of the valerian family that grows in the Himalayas, used as a perfume, an incense, a sedative, and an herbal medicine.
• A fragrant oil from the plant, formerly much prized.
• American spikenard (Aralia racemosa), a North American perennial herb with an aromatic root.
• (US, 1980s, slang, usually in the plural) A testicle.
• A diminutive of the male given name Bernard.