plump up

US /plʌmp ʌp/
UK /plʌmp ʌp/
"plump up" picture
1.

esponjar, rellenar

to make something fuller or rounder, or to become fuller or rounder

:
She plumped up the cushions on the sofa.
Ella esponjó los cojines del sofá.
The dried fruit will plump up when soaked in water.
La fruta seca se hinchará al remojarla en agua.