belly

1 belly /ˈbɛli/ noun
plural bellies
1 belly
/ˈbɛli/
noun
plural bellies
Britannica Dictionary definition of BELLY
[count]
1 
a  : a person's stomach or the part of the body that contains the stomach
— see also beer belly, potbelly
b  : the part of an animal's body that is like a person's belly — see also underbelly
2 
: a curved or rounded surface or part

— bellied

adjective
— used in combination — see also yellow-bellied
2 belly /ˈbɛli/ verb
bellies; bellied; bellying
2 belly
/ˈbɛli/
verb
bellies; bellied; bellying
Britannica Dictionary definition of BELLY
: to cause (something, such as a sail) to curve or bulge outward
[+ object]
[no object]

belly up to

[phrasal verb]
belly up to (someone or something) US, informal
: to walk to or toward (someone or something)