مؤخرة بالانجليزي

a person's bottom

ضَرَبَنِيْ عَلَىْ مُؤَخِّرَتِيَ

He hit me on my behind

المُؤَخِّرَةُ هِيَ الجُزْءُ الخَلْفِيُّ مِنْ شَيْءٍ مَا

(usually the rear) [singular] the back part of something

المَرَاحِيْضُ فِيْ مُؤَخِّرَةِ العَرَبَةِ

Toilets are at the rear of the carriage

تَقِفُ فِيْ مُؤَخِّرَةِ الفَنَاءِ الخَلْفِيِّ

She is standing at the rear of the backyard

المُؤَخِّرَةُ هِيَ القَفَا أَوْ جُزْءُ الجِسْمِ الَّذِيْ تَجْلِسُ عَلَيْهِ

(also rear end) [countable, usually singular] (informal) the part of the body that you sit on

قَعَدْتُّ (= جَلَسْتُ) عَلَىْ مُؤَخِّرَتِيْ عَلَىْ العُشْبِ

I sat on my rear on the grass

رَكَلَنِيْ عَلَىْ مُؤَخِّرَتِيْ

He kicked me in the rear