خزانة الأمتعة خلف الدرج الرئيسي.

In Arabic, the verb to be is usually not written in the present tense.

So instead of saying:

• The luggage room is behind the main stairs

Arabic simply says:

• خزانة الأمتعة خلف الدرج الرئيسي

This is called a nominal sentence. The idea of is is understood automatically.

If you wanted the past tense, then Arabic would use a verb, for example:

• كانت خزانة الأمتعة خلف الدرج الرئيسي = The luggage room was behind the main stairs

Literally, خزانة الأمتعة means something like:

• storage/closet of the luggage
• more naturally in English: luggage storage, baggage room, or luggage closet

This is an iḍāfa (إضافة), often called a genitive or possessive construction.

It is made of:

• خزانة = cupboard, cabinet, closet, storage
• الأمتعة = the luggage, the baggage

So the structure is:

• خزانة الأمتعة = the luggage storage / the baggage room

Arabic often uses this noun + noun structure where English might use:

• of
• a possessive
• or a noun used like an adjective

Because in an iḍāfa construction, the first noun usually does not take الـ.

So:

• خزانة الأمتعة

not:

• الخزانة الأمتعة

In an iḍāfa, the second noun controls whether the whole phrase is definite or indefinite.

Since الأمتعة has الـ, the whole phrase خزانة الأمتعة is definite, meaning:

• the luggage storage

not just

• a luggage storage

So even without الـ on خزانة, the full phrase is still definite.

Because الأمتعة is the second part of the iḍāfa, and it makes the whole phrase definite.

Compare:

• خزانة أمتعة = a luggage storage / a baggage cabinet
• خزانة الأمتعة = the luggage storage / the baggage room

So الـ on الأمتعة is important because it tells you that this is a specific, known luggage storage area.

Because in Arabic, adjectives come after the noun.

So:

• الدرج الرئيسي = the main stairs / the main staircase

not:

• الرئيسي الدرج

This is the normal Arabic order:

• noun + adjective

Also, the adjective must match the noun in definiteness. Since الدرج has الـ, the adjective must also have الـ:

• الدرج الرئيسي

not:

• الدرج رئيسي

Because it is describing الدرج, and Arabic adjectives must agree with the noun they describe.

Here:

• الدرج is treated as masculine singular
• so the adjective is also masculine singular: الرئيسي

This agreement includes:

• gender
• number
• definiteness
• case (in fully vowelled Arabic)

So الرئيسي matches الدرج correctly.

It can mean either, depending on context.

In this sentence, الدرج الرئيسي most naturally means:

• the main stairs
• or the main staircase

Arabic often uses الدرج as a collective noun for a staircase or set of stairs, even though English often prefers the plural stairs.

So even though the Arabic word looks singular, the English translation may naturally be plural.

خلف means behind.

In this sentence:

• خلف الدرج الرئيسي = behind the main stairs

It functions as a word of place. The noun after it is in the genitive sense, so:

• خلف الدرج = behind the stairs

You can compare it with similar location words:

• أمام = in front of
• خلف = behind
• فوق = above
• تحت = under
• بجانب = beside

So the structure is:

• place word + noun

A natural pronunciation is:

• Khizānat al-amtiʿa khalf ad-daraj ar-raʾīsī

A few useful pronunciation notes:

• خ is like a throaty kh
• ع in أمتعة is a deep Arabic consonant with no exact English equivalent
• خزانة ends in ـة (tāʾ marbūṭa), and here it is pronounced like -at because it is followed by another noun in an iḍāfa:
  • خزانة alone: often khizāna(h)
  • خزانة الأمتعة: khizānat al-amtiʿa

Yes. In fully vowelled formal Arabic, the sentence could be written approximately as:

• خِزانَةُ الأَمْتِعَةِ خَلْفَ الدَّرَجِ الرَّئِيسِيِّ

Those endings show grammar:

• خزانةُ = nominative, because it is the subject/topic of the sentence
• الأمتعةِ = genitive, because it is the second noun in an iḍāfa
• خلفَ = accusative as an adverbial expression of place
• الدرجِ = genitive after خلف
• الرئيسيِّ = genitive because it matches الدرج

In normal everyday Arabic writing, these short vowel endings are usually omitted.

Yes. خزانة is a flexible word. Depending on context, it can mean:

• cabinet
• cupboard
• closet
• locker
• storage space

So خزانة الأمتعة might refer to:

• a luggage room
• a baggage closet
• a luggage storage area

The exact English translation depends on the setting. In a hotel, station, or public building, it would often be understood as luggage storage.

It can be understood as either, and that is very common in Arabic.

As a full sentence, it means:

• The luggage storage is behind the main stairs.

As a sign or directional label, it works very naturally too:

• Luggage storage — behind the main stairs

Arabic often allows very short location expressions like this, especially on signs, maps, and in directions.