الترزي بيخيط البطانة.

A rough pronunciation is:

et-terzi biykhīṭ el-biṭāna

A few pronunciation notes:

• خ in بيخيط is like the ch in German Bach or Scottish loch
• ط in البطانة is a heavier, emphatic t
• ة at the end of البطانة is pronounced like -a here

You may also hear small vowel differences such as el / il or et / it depending on the speaker.

Because ت is a sun letter.

In Arabic, when الـ comes before a sun letter, the l sound assimilates to the next consonant. So:

• الترزي becomes pronounced
• et-terzi

The spelling stays the same, but the pronunciation changes.

Yes. الترزي means the tailor in Egyptian Arabic.

It is a very common Egyptian colloquial word. In Modern Standard Arabic, you are more likely to see:

• الخياط = the tailor

So الترزي sounds specifically Egyptian/colloquial.

بيخيط means he sews or he is sewing, depending on context.

The bi- prefix is very common in Egyptian Arabic and usually marks the present/habitual form of the verb.

So:

• خيط relates to sewing
• بيخيط = he sews / he is sewing

This bi- is one of the big differences between Egyptian Arabic and Modern Standard Arabic.

It can mean either one.

In Egyptian Arabic, the same present form often covers both:

• he sews
• he is sewing

So الترزي بيخيط البطانة could mean either:

• The tailor sews the lining
• The tailor is sewing the lining

Context tells you which one is meant.

Because the verb already tells you that the subject is he.

In بيخيط, the verb form itself is 3rd person singular masculine, so it already means he sews / he is sewing.

Since the sentence already has the noun الترزي = the tailor, adding a separate he would be unnecessary.

البطانة means the lining, especially the inner lining of a garment or piece of clothing.

So in this sentence, it refers to the inner layer that the tailor is sewing.

It is a feminine noun, which is very common for nouns ending in ة.

Because both nouns are definite:

• الترزي = the tailor
• البطانة = the lining

Arabic uses الـ to mean the. So this sentence is talking about a specific tailor and a specific lining, not just a tailor and a lining.

Yes. الترزي بيخيط البطانة is a very normal Egyptian Arabic sentence.

It follows this pattern:

• subject + verb + object

So:

• الترزي = subject
• بيخيط = verb
• البطانة = object

Egyptian Arabic often prefers this subject-first order in everyday speech.

Yes, but it may sound different in tone or emphasis.

For example:

• بيخيط الترزي البطانة

This is possible, but الترزي بيخيط البطانة is the more straightforward, conversational order in Egyptian Arabic.

For a learner, the subject-first version is the safest one to use.

A natural Modern Standard Arabic version would be:

الخياط يخيط البطانة

Main differences:

• Egyptian: الترزي
• MSA: الخياط

and

• Egyptian present: بيخيط
• MSA present: يخيط

So the sentence you were given is clearly Egyptian Arabic.

In Egyptian Arabic, a common negation pattern is ما ... ش around the verb:

• الترزي ما بيخيطش البطانة

This means:

• The tailor is not sewing the lining
• or The tailor does not sew the lining

So:

• ما goes before the verb
• ش goes after the verb

That pattern is extremely common in spoken Egyptian Arabic.