Pračka stojí mezi skříní a stěnou.

Because pračka is the subject of the sentence, so it is in the nominative singular.

• dictionary form: pračka
• gender: feminine
• role here: the thing doing the action / being described

So Pračka stojí... means The washing machine is standing / is located...

Yes, literally stojí means stands. It is the 3rd person form of stát.

In this sentence, though, it is often best understood as:

• is standing
• is located
• is positioned

Czech often uses verbs like:

• stát = stand
• ležet = lie
• viset = hang

in places where English might simply use is.

So Pračka stojí mezi skříní a stěnou is very natural Czech for saying that the washing machine is positioned there.

Because Czech often prefers a more physical, position-based verb.

Compare:

• Pračka je mezi skříní a stěnou. = The washing machine is between the wardrobe and the wall.
• Pračka stojí mezi skříní a stěnou. = The washing machine is standing/is positioned between the wardrobe and the wall.

Both are possible, but stojí sounds more natural when talking about an upright object such as furniture or an appliance.

Because the preposition mezi can require different cases, and here it takes the instrumental.

In this sentence, mezi expresses location: the washing machine is already in that position.
So Czech uses:

• mezi + instrumental

That gives:

• skříň → skříní
• stěna → stěnou

So:

• mezi skříní a stěnou = between the wardrobe and the wall

Mezi uses the accusative when there is movement toward a position.

So there is an important contrast:

• Pračka stojí mezi skříní a stěnou.
  The washing machine is between the wardrobe and the wall.
  → location → instrumental

• Dám pračku mezi skříň a stěnu.
  I will put the washing machine between the wardrobe and the wall.
  → movement/direction → accusative

This is a very common Czech pattern with some prepositions.

Because skříň and stěna belong to different declension patterns.

• skříň is a feminine noun ending in a consonant

  • nominative singular: skříň
  • instrumental singular: skříní

• stěna is a feminine noun ending in -a

  • nominative singular: stěna
  • instrumental singular: stěnou

So both words are in the same case, but they form that case differently.

Yes. A simply means and.

In the phrase mezi X a Y, Czech works just like English between X and Y.

So:

• mezi skříní a stěnou = between the wardrobe and the wall

Notice that both nouns after mezi stay in the same case here, namely the instrumental.

Because Czech does not have articles like English a/an/the.

So pračka can mean:

• a washing machine
• the washing machine

The exact meaning depends on the context.

That is completely normal in Czech. Learners often want to insert an article, but Czech simply does not use one.

No, Czech word order is fairly flexible because the cases show the grammatical roles.

Pračka stojí mezi skříní a stěnou is the most neutral order.

But you could also say:

• Mezi skříní a stěnou stojí pračka.

That still means the same thing, but it shifts the emphasis a bit.
This version puts more focus on the location first.

So the original sentence is neutral and natural, but not the only possible order.

Yes, especially for an English speaker:

• ř in skříní is a famous Czech sound with no exact English equivalent.
• í and ou are important vowel sounds:
  • skříní has a long í
  • stěnou has ou as in one Czech diphthong

A rough pronunciation guide:

• Pračka ≈ PRAH-chka
• stojí ≈ STOH-yee
• skříní ≈ difficult because of ř, but roughly skrzhee-nee
• stěnou ≈ styeh-noh

The most important thing is not to ignore vowel length completely, because in Czech it can matter.