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).
1 I place the gourds in water, weigh them down with a wet towel and let them soak. 2  If the gourd feels like it has a thinner shell, I keep the soaking to a minimum, otherwise they can soak for up to an hour or so.  Then I use a steel scrubber. The one I use is similar to the copper scrubber only steel.