This is the 9640th most frequent German word.
mäher
"Mäher" means "mower" in English.
Here 'Mäher' refers to a gardening tool used for cutting grass, demonstrating its use as a noun.
Der Mäher mäht das Gras im Garten.
The mower mows the grass in the garden.
In this case, 'Mäher' again functions as a noun, indicating the machine that is to be fixed.
Wir sollten den Mäher reparieren, bevor wir den Garten pflegen.
We should repair the mower before tending to the garden.
Here, 'Mähern' is the plural form of 'Mäher', referring to various kinds of mowing machines.