puppy fat
US /ˈpʌp.i ˌfæt/
UK /ˈpʌp.i ˌfæt/

1.
grasa infantil, michelines de niño
fat on a child's body that disappears as they get older
:
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She still has a bit of puppy fat, but she'll grow out of it.
Todavía tiene un poco de grasa infantil, pero lo perderá al crecer.
•
Many children have puppy fat before they hit their growth spurt.
Muchos niños tienen grasa infantil antes de su estirón de crecimiento.