start meaning
EN
[stɑɹt] [stɑːt] [-ɑː(ɹ)t] 
US UK WStart
- Start can refer to multiple topics:
- Takeoff, the phase of flight where an aircraft transitions from moving along the ground to flying through the air
- Start, Louisiana, a town in the United States
- Start (newspaper), a daily tabloid published in Serbia
- Start-1, a Russian launch vehicle
- Start (cereal), a breakfast cereal produced by Kellogg's since the 1980s, mainly in the UK
- START or S.T.A.R.T. can refer to:
- Strategic Arms Reduction Treaties, a series of arms reduction treaties between the US and USSR
- START I (1991)
EN Start 
- NounPLstarts
- The beginning of an activity.
- The movie was entertaining from start to finish.
- A sudden involuntary movement.
- He woke with a start.
- The beginning point of a race, a board game, etc.
- An appearance in a sports game from the beginning of the match.
- Jones has been a substitute before, but made his first start for the team last Sunday.
- A young plant germinated in a pot to be transplanted later.
- A tail, or anything projecting like a tail.
- A handle, especially that of a plough.
- The curved or inclined front and bottom of a water wheel bucket.
- The arm, or level, of a gin, drawn around by a horse.
- The beginning of an activity.
- VerbSGstartsPRstartingPT, PPstarted
- VT To begin, commence, initiate.
- to start a stream of water;   to start a rumour;   to start a business
- Imagine a country where children do nothing but play until they start compulsory schooling at age seven. Then, without exception, they attend comprehensives until the age of 16. Charging school fees is illegal, and so is sorting pupils into ability groups by streaming or setting.
- Sensual men agree in the pursuit of every pleasure they can start.
- VI To begin an activity.
- The rain started at 9:00.
- To startle or be startled; to move or be moved suddenly.
- But if he start, / It is the flesh of a corrupted heart.
- to start a bone;   the storm started the bolts in the vessel
- I started from my sleep with horror [ …]
- The hounds started a fox.
- VI To break away, to come loose.
- (nautical) To pour out; to empty; to tap and begin drawing from.
- to start a water cask
- (euphemistic) To start your periods (menstruation).
- Have you started yet?
- VT To begin, commence, initiate.
- More Examples
- Used in the Middle of Sentence
- At the start of the game, the referee racks up the red balls.
- Students are expected to start studying for final exams in March.
- From the start of their strange and embattled marriage, they established a pattern of suddenly pulling up stakes with little notice to family members or neighbors.
- Used in the Beginning of Sentence
- started some tomato seeds last spring, but they didn't take.
- Starting with a couple of inconsistencies, the detective began to pull apart his alibi.
- Starting at the zero-gravity of earth's core, accumulative acceleration is easily built up in a four-thousand-mile tube.
- Used in the Ending of Sentence
- I snuck into the theater because the movie had already started.
- If you don't keep doing excercise in summer, you will find you are out of condition when the new season starts.
- Sensual men agree in the pursuit of every pleasure they can start.
- Used in the Middle of Sentence
Definition of start in English Dictionary
- Part-of-Speech Hierarchy
- Nouns
- Countable nouns
- Countable nouns
- Verbs
- Control verbs
- Ergative verbs
- Intransitive verbs
- Transitive verbs
- Control verbs
- Nouns
Source: Wiktionary
Grammatically, this word "start" is a noun, more specifically, a countable noun. It's also a verb, more specifically, a control verb, an ergative verb, an intransitive verb and a transitive verb.