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Glossary

What is a deyn book?

A deyn book is the paper notebook a grocery store keeps under the counter to record customer credit — who owes the store money, and how much. Deyn is the Somali word for debt. It is how the custom of store credit has always been tracked in halal and corner groceries: a regular runs a tab through the week and settles when the money comes in. DeynBook is the app that replaces that notebook with a record which cannot be lost, soaked, or argued over.

A butcher in whites cutting lamb behind the counter of a halal meat shop while a customer waits

Hilib halal — halal meat, and by extension the shop that sells it.

The words

A short glossary.

The handful of Somali terms that come up around store credit — and what each one means at the counter.

Deyn/dayn/
Debt or credit, in Somali.
Deyn is the Somali word for debt — specifically the running credit a grocery store extends to a regular customer, who pays it down at the end of the week or the month. It is given on trust, between people who know each other.
Deyn book
The notebook a shop keeps its customer credit in.
The deyn book is the paper notebook kept under the counter that records who owes the store what. Names in one column, amounts in another. It is the ledger the whole custom of store credit runs on — and the thing DeynBook was built to replace, because paper gets lost, soaked, and argued over.
Hilib halal/hi-lib ha-laal/
Halal meat — and, by extension, the halal grocery store.
Hilib halal is Somali for halal meat. In practice it is also how people refer to the neighbourhood halal grocery and butcher — the shop that sells halal meat alongside rice, oil, xawaash and the rest of the weekly groceries. These are the stores DeynBook is built for.
Xasuusin/ha-suu-sin/
A reminder.
Xasuusin is the Somali word for a reminder. In DeynBook it is the text message or automated call that goes to a customer with their exact balance when a payment is due — so the shopkeeper does not have to ask in person.
Macmiil/mac-miil/
A customer.
Macmiil is Somali for customer. In a grocery store that runs deyn, the macmiil is a regular — someone known by name, carried on credit through the month, and reminded gently when it is time to settle.
From notebook to app

The book is sound. The paper is the problem.

There is nothing wrong with the deyn itself. Extending credit to regulars on trust is how neighbourhood shops have always worked, and it is what keeps a customer coming back. The trouble is the notebook: a page gets wet, an entry gets written by whoever covered the evening shift, two people cannot use it at once, and it never adds itself up. By the end of a busy month, no one is sure what they are owed.

A digital deyn book fixes the record and leaves the trust alone. Every customer gets an account instead of a scribbled line. The balance is always right. A receipt carries the date, so there is never an argument about what was paid. And a reminder goes out in Somali or English with each customer’s exact balance, so the shopkeeper stops having to ask in person. That is what DeynBook is.

Quick answers

People also ask.

What is a deyn book?

A deyn book is the paper notebook a grocery store keeps under the counter to record customer credit — who owes the store money and how much. "Deyn" is the Somali word for debt. It is how the custom of store credit has always been tracked, and it is what apps like DeynBook now replace with a digital record that cannot be lost or soaked.

What does deyn mean?

Deyn is Somali for debt or credit — the running tab a grocery store extends to a regular customer who pays it down later. It is given on trust between neighbours.

What does hilib halal mean?

Hilib halal is Somali for halal meat, and it is also a common way to refer to the neighbourhood halal grocery and butcher shop — the store that sells halal meat along with everyday groceries.

What software do Somali grocery stores use to track credit?

Many now use DeynBook, an app built specifically to replace the paper deyn book. It gives every customer an account, keeps balances exact, and sends payment reminders in Somali or English. It is used by halal grocery stores across the US and Canada.