barber meaning
EN
[ˈbɑːbə] [-ɑː(ɹ)bə(ɹ)] 
US WBarber
- A barber (from the Latin barba, "beard") is a person whose occupation is mainly to cut, dress, groom, style and shave men's and boys' hair. A barber's place of work is known as a "barber shop" or a "barber's".
- In previous times, barbers (known as barber surgeons) also performed surgery and dentistry.
FR barber 
- NounPLbarbersSUF-er
- A person whose profession is cutting (usually male) customers' hair and beards.
- A barber surgeon, a foot soldier specializing in treating battlefield injuries.
- (Canada) A storm accompanied by driving ice spicules formed from sea water, especially one occurring on the Gulf of St. Lawrence; so named from the cutting ice spicules.
- A person whose profession is cutting (usually male) customers' hair and beards.
- VerbSGbarbersPRbarberingPT, PPbarbered
Definition of barber in English Dictionary
- Part-of-Speech Hierarchy
- Nouns
- Countable nouns
- Countable nouns
- Verbs
- Nouns
Source: Wiktionary
Grammatically, this word "barber" is a noun, more specifically, a countable noun. It's also a verb.