nerve
/ˈnərv/
noun
sinew, tendon
any of the filamentous bands of nervous tissue that connect parts of the nervous system with the other organs, conduct nerve impulses, and are made up of axons and dendrites together with protective and supportive structures
strain every nerve
verb
to give strength or courage to : supply with physical or moral force
noun
a toxic, usually odorless organophosphate (such as sarin, tabun, or VX) that is used as a chemical weapon in gaseous or liquid form, disrupts the transmission of nerve impulses, and may cause breathing difficulties, coughing, vomiting, muscle weakness or paralysis, convulsions, coma, and death : nerve, gas