vert meaning
EN
[vɜːt] [vɝt] [-ɜː(r)t] WVert
- In classical heraldry, vert (/vɜrt/) is the name of the tincture roughly equivalent to the colour "green". It is one of the five dark tinctures (colours). The word vert is simply the French for "green".
- The colour green is commonly found in modern flags and coat of arms, and to a lesser extent also in the classical heraldry of the Late Middle Ages and the Early Modern period.
- The vert tincture is said to represent the following:
- of jewels, the emerald;
- of heavenly bodies, Venus.
FR vert 
- NounPLverts
- (heraldry) A green colour, now only in heraldry; represented in engraving by diagonal parallel lines 45 degrees counter-clockwise.
- (archaic) Green undergrowth or other vegetation growing in a forest, as a potential cover for deer.
- (archaic) The right to fell trees or cut shrubs in a forest.
- 1819: “I understand thee,” said the King, “and the Holy Clerk shall have a grant of vert and venison in my woods of Warncliffe.” — Walter Scott, Ivanhoe
- (colloquial) In sport, a type of bicycle stunt competition.
- A vertical surface used by skateboarders or skiers.
- (heraldry) A green colour, now only in heraldry; represented in engraving by diagonal parallel lines 45 degrees counter-clockwise.
- AdjectiveCOMmore vertSUPmost vert
- Abbreviation
Definition of vert in English Dictionary
- Part-of-Speech Hierarchy
- Adjectives
- Nouns
- Countable nouns
- Countable nouns
- Adjectives
- en vertical
- fr vertical
- en vertically
- en vertebrate
- en vertigo
Source: Wiktionary
Grammatically, this word "vert" is an adjective. It's also a noun, more specifically, a countable noun.