Freebase(0.00 / 0 votes)Rate this definition: Root nodule. Root nodules occur on the roots of plants that associate with symbiotic nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia.
Ayurvedic health benefits of bottle gourd/lau/ lauki: 1  Ayurveda recommends cooked lauki or bottle gourd for better digestion. It is cooling, calming, diuretic and anti-bilious (reduces bile and stops indigestion).
Step 1. Clean your dried gourd. Once dried, gourds typically have a crust of mold encasing their skin. Let your dried gourd soak in a 5-gallon bucket full of hot water for 15 to 20 minutes, then scrub it with a steel wool kitchen scrubby. Remove any stubborn bits of moldy skin by paring them off in thin strips with the dull side of a butter knife.