nerve meaning
EN
[-ɜː(r)v] 
US WNerve
- A nerve is an enclosed, cable-like bundle of axons (the long, slender projections of neurons) in the peripheral nervous system.
- In the central nervous system, the analogous structures are known as tracts.
- Each nerve is a cordlike structure that contains many axons, also called nerve fibres. Within a nerve, each axon is surrounded by a layer of connective tissue called the endoneurium.
FR nerve 
- NounPLnerves
- (zoology) A bundle of neurons with their connective tissue sheaths, blood vessels and lymphatics.
- The nerves can be seen through the skin.
- (nonstandard, colloquial) A neuron.
- (botany) A vein in a leaf; a grain in wood.
- Some plants have ornamental value because of their contrasting nerves
- Courage, boldness.
- He hasn't the nerve to tell her he likes her, what a wimp!
- Patience. (Can we add an example for this sense?).
- Stamina, endurance, fortitude.
- Audacity, gall.
- He had the nerve to enter my house uninvited.
- (in the plural) Agitation caused by fear, stress or other negative emotion.
- Ellie had a bad case of nerves before the big test.
- (obsolete) Sinew, tendon.
- (zoology) A bundle of neurons with their connective tissue sheaths, blood vessels and lymphatics.
- VerbSGnervesPRnervingPT, PPnerved
- (transitive) To give courage; sometimes with "up".
- May their example nerve us to face the enemy.
- (transitive) To give strength.
- The liquor nerved up several of the men after their icy march.
- (transitive) To give courage; sometimes with "up".
- More Examples
- Used in the Middle of Sentence
- The eye doctor put drops in my eye to dilate the pupil so he could see the nerve better.
- Sensorimotor polyneuropathy was diagnosed by electroneurography (ENG) with slightly reduced nerve conduction velocities and increased F wave latencies.
- F wave studies of the right peroneal and right tibial nerves were unelicitable.
- Used in the Ending of Sentence
- There’s an insect buzzing around in my bedroom tonight, and it’s really getting on my nerves.
- Used in the Middle of Sentence
Definition of nerve in English Dictionary
- Part-of-Speech Hierarchy
- Nouns
- Countable nouns
- Countable nouns
- Verbs
- Transitive verbs
- Transitive verbs
- Nouns
- fr nerves
- en nerves
- fr nerve
- en nerve-racking
- en nerve-wracking
Source: Wiktionary
Grammatically, this word "nerve" is a noun, more specifically, a countable noun. It's also a verb, more specifically, a transitive verb.