(idiomatic) Having a hard, strong, and determined mindset, with very steady nerves; great patience and courage.

(entomology) Having a fan-like arrangement of the nervures or veins of the wings.

(physiology) The signal transmitted along a nerve fibre, either in response to a stimulus (such as touch, pain or heat), or as an instruction (such as causing a muscle to contract).

(cytology) A cell of the nervous system which conducts nerve impulses; a neuron.

(neuroanatomy) Any of the twelve paired nerves that originate from the brainstem or base of the brain instead of the spinal cord.

(neuroanatomy) Either of the tenth pair of cranial nerves which extend from the medulla oblongata down into the abdomen. Branches of these important nerves supply the tongue, larynx, lungs, gut, and heart.

Intensely irritating or distressing to the nerves.

(proscribed) Alternative form of nerve-racking

(anatomy) A dorsal tubular cord of nervous tissue above the notochord of a chordate.

(anatomy) An axon