Nerves meaning : A bundle of neurons with their connective tissue sheaths, blood vessels and lymphatics. A neuron. A vein in a leaf; a grain in wood Courage, boldness. Patience. Stamina, endurance, fortitude. Audacity, gall. (polymer technology) The elastic resistance of raw rubber or other polymers to permanent deformation during processing. (in the plural) Agitation caused by fear, stress or other negative emotion. Sinew, tendon. To give courage. To give strength; to supply energy or vigour.