What is the meaning of Gallic_acid?

a phenolic carboxylic acid, 3,4,5-trihydroxybenzoic acid, found in galls, tea, the bark of some trees etc; a constituent of tannin

the supposed acid H3GaO3, the acid form of the amphoteric gallium hydroxide Ga(OH)3, known only as alkali metal salts

Source: wiktionary.org