buttocks
US /ˈbʌt.əks/
UK /ˈbʌt.əks/
1.
billen, zitvlak
the two rounded fleshy parts of the human body that form the rear part of the trunk
:
•
She landed hard on her buttocks.
Ze landde hard op haar billen.
•
The doctor examined the patient's buttocks.
De dokter onderzocht de billen van de patiënt.