الشاكوش بيكسر الجبس.

A natural Egyptian pronunciation is:

ish-shakūsh biyiksar il-gibs

You may also see it written in transliteration as:

esh-shakoosh biyiksar el-gibs

A few pronunciation notes:

• ش = sh
• ج in Egyptian Arabic is usually a hard g
• بيكسر is roughly bi-yik-sar
• الجبس sounds like il-gibs / el-gibs

So the whole sentence does not sound like each Arabic letter is pronounced separately in a slow, careful way.

Because ش is a sun letter.

In Arabic, when the definite article الـ comes before a sun letter, the l sound of الـ assimilates to the next consonant.

So:

• ال + شاكوش
• becomes pronounced ish-shakūsh / esh-shakoosh

You still write ال, but you pronounce a doubled sh sound.

By contrast, الجبس keeps the l sound, because ج is not a sun letter in pronunciation here.

بيكسر is the verb in the sentence.

It can be broken down like this:

• بـ = a common Egyptian marker for the present/habitual
• يكسر = he breaks / it breaks

So بيكسر means something like:

• breaks
• is breaking
• does break

The exact English translation depends on context.

Because الشاكوش is a masculine singular noun, the verb appears in the 3rd person masculine singular form.

It can mean either one, depending on context.

In Egyptian Arabic, بيكسر can be used for:

• a general statement: breaks
• a habitual action: usually breaks
• a current action: is breaking

So this sentence could describe:

• what a hammer does in general, or
• what the hammer is doing right now

English often forces you to choose between breaks and is breaking, but Egyptian Arabic is often more flexible here.

Because Arabic does not need an extra auxiliary verb like English is in a sentence like this.

English says:

• The hammer is breaking the plaster

But Egyptian Arabic can simply use the verb itself:

• بيكسر

That one word already carries the idea of present-time action.

So there is no separate word corresponding to English is here.

Because subject + verb + object is very common and natural in Egyptian Arabic.

So:

• الشاكوش = subject
• بيكسر = verb
• الجبس = object

This word order is especially common in everyday spoken Egyptian.

A verb-first order is possible in Arabic more generally, especially in more formal styles, but for colloquial Egyptian this sentence sounds very normal as subject first.

Because الـ means the.

So:

• الشاكوش = the hammer
• الجبس = the plaster / the gypsum

But there is an important point: Arabic often uses the definite article in places where English may sound more natural without it, especially in generic statements.

So a sentence with الـ can sometimes sound more general than a literal English the might suggest.

الشاكوش is a very common Egyptian Arabic word for hammer.

In Modern Standard Arabic, the more standard word is:

• مطرقة

So an Egyptian learner should know:

• شاكوش = very natural in Egyptian speech
• مطرقة = more standard/formal

If your goal is Egyptian Arabic, شاكوش is the useful everyday word.

Because in Egyptian Arabic, ج is usually pronounced as a hard g.

So:

• الجبس sounds like il-gibs / el-gibs

This is one of the most noticeable differences between Egyptian Arabic and Modern Standard Arabic pronunciation, where learners are often taught ج as j.

In Egyptian:

• جميل sounds like gamīl
• الجبس sounds like il-gibs

The verb comes from the root:

• ك-س-ر

This root is connected with the idea of breaking.

A common past form is:

• كَسَر = he broke

The present form in Egyptian is:

• بيكسر = he breaks / it breaks / is breaking

So if you learn the root ك-س-ر, you will recognize related words about breaking or being broken.

In everyday Egyptian Arabic, بيكسر is the normal choice here.

If you say:

• الشاكوش بيكسر الجبس

that sounds natural in Egyptian.

If you say:

• الشاكوش يكسر الجبس

that sounds more like:

• Modern Standard Arabic, or
• a form used after certain particles in Arabic grammar

So for normal spoken Egyptian, keep بـ in this kind of sentence.

A common Egyptian negation is:

الشاكوش ما بيكسرش الجبس

This uses the Egyptian ma-...-sh negation pattern around the verb:

• ما
• بيكسر
• ش

So:

• بيكسر = breaks / is breaking
• ما بيكسرش = does not break / is not breaking

This is one of the most important negation patterns in spoken Egyptian Arabic.

The verb changes to match the subject.

For example:

• هو بيكسر = he is breaking / he breaks
• هي بتكسر = she is breaking / she breaks
• همّا بيكسروا = they are breaking / they break

So in your sentence, بيكسر is used because الشاكوش is treated as masculine singular.

If the subject were a feminine noun, you would usually use بتكسر instead.