Learn Arabic › B1 › جَيْب
جَيْب
pocket /ˈdʒajb/
nounB1#1778 most common
Also: sine (in mathematics), cavity, fold
Example sentences
المِفتاحُ في جَيْبي.
The key is in my pocket.
ضَعِ النُّقودَ في جَيْبِك.
Put the money in your pocket.
وَجَدْتُ ثُقباً في جَيْبِ مِعطَفي.
I found a hole in my coat pocket.
جُيوبُ هذا البَنطالِ ضَيِّقةٌ جِدّاً.
The pockets of these trousers are very narrow.
دَفَعَ ثَمَنَ الرِّحلةِ مِن جَيْبِهِ الخاصِّ.
He paid for the trip out of his own pocket.
في الرِّياضِيّاتِ، جَيْبُ الزاويةِ نِسبةٌ بَينَ ضِلعَينِ.
In mathematics, the sine of an angle is a ratio between two sides.
Declension
| Case | Singular | Plural |
|---|---|---|
| Nominative | جَيْبٌ | جُيوبٌ |
| Genitive | جَيْبٍ | جُيوبٍ |
| Accusative | جَيْباً | جُيوباً |
| Vocative | يا جَيْبُ | يا جُيوبُ |
Word family
جُيوبpockets (plural)
جَيْبيّrelating to a pocket; sinusoidal
جَيْب التمامcosine
جُيَيْبsmall pocket (diminutive)
Etymology
The word comes from the Semitic root j-y-b and names a fold or pocket in a garment. It later gained a second life in mathematics. Medieval Arabic scribes rendered the Sanskrit term for the sine function as jb, read as jayb, meaning pocket or fold. Latin translators copied the sense literally as sinus, which is the source of the English word sine.
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