A granary; a store of grain.
"The ancient ruins contained a large garner where farmers stored their harvested wheat before winter."
In plain English: A garner is not actually used as a noun; it is only a verb meaning to collect or gather things together.
"The politician needed to garner support from voters in rural areas before he could win the election."
Usage: The noun form refers to an old-fashioned storage facility or stockpile of grain and is rarely used in modern conversation compared to the verb meaning "to collect." You will mostly encounter this term when reading historical texts rather than in everyday speech.
assemble or get together
"gather some stones"
"pull your thoughts together"
To reap grain, gather it up, and store it in a granary.
"The farmers would harness their oxen to garner the harvested wheat into the large stone granary before winter arrived."
In plain English: To garner means to gather together information, support, or attention from many different sources.
"The athlete hoped to garner enough fan support to win the championship game."
A surname.
"The local garage was owned by Mr. Garner, a common surname in the region."
Garner comes from the Old French word guernier, which originally meant a granary or storehouse for grain. The term entered English through Middle English and shares its Latin root with the doublet "granary."