mähen
to mow
To cut grass or a meadow short with a machine (lawn mower) or a tool (scythe).
Am Samstag muss ich unbedingt den Rasen mähen.
On Saturday, I absolutely have to mow the lawn.

to mow
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to mow
To cut grass or a meadow short with a machine (lawn mower) or a tool (scythe).
Am Samstag muss ich unbedingt den Rasen mähen.
On Saturday, I absolutely have to mow the lawn.

The verb 'mähen' (to mow) almost always needs an accusative object that indicates what is being cut. You usually cannot simply 'mähen'; you always mow something.
Der Gärtner mäht die große Wiese hinter dem Haus.
The gardener mows the large meadow behind the house.
The perfect tense of 'mähen' (to mow) is formed with the auxiliary verb 'haben' and the participle 'gemäht'. The form is the same in all meanings.
Ich habe gestern den Rasen gemäht.
I mowed the lawn yesterday.
In the context of gardening, 'mähen' (to mow) is typically used with 'den Rasen' (the lawn) or 'die Wiese' (the meadow). The appropriate tool is often 'der Rasenmäher' (the lawn mower).
Könntest du bitte am Wochenende den Rasen mähen?
Could you please mow the lawn this weekend?
This meaning of 'mähen' (to mow) belongs to the field of agriculture and harvesting. Typical objects are 'das Getreide' (the grain), 'das Korn' (the grain), or 'der Weizen' (the wheat).
Früher mähten die Bauern das Getreide mit der Sense.
In the past, farmers mowed the grain with a scythe.
to cut
'schneiden' and 'mähen' both mean that something is made shorter or cut off with a tool or machine. 'schneiden' is the general word and fits many things, such as paper, vegetables, or fabric. 'mähen' is used only for grass, meadows, or grain in a field. It sounds like gardening or agriculture. The words can be confused because when you mow, you are in fact cutting grass or grain. Even so, in everyday language you say 'den Rasen mähen' (to mow the lawn), not 'den Rasen schneiden', when you are using a lawn mower.

Am Samstag mähen wir den Rasen hinter dem Haus.
On Saturday, we mow the lawn behind the house.
In der Küche schneidet Frau Yilmaz das Brot für das Abendessen.
In the kitchen, Mrs. Yilmaz cuts the bread for dinner.