0 past simple and past participle of giggle
1 to laugh repeatedly in a quiet but uncontrolled way, often at something silly or rude or when you are nervous:
Stop that giggling in the back row!
We giggled at the back of the room like naughty schoolchildren.
I couldn't help giggling at the sight of Mum and Dad standing there, dripping wet.
He was giggling uncontrollably and had to leave the room to pull himself together.
When she suddenly started to sing, we all looked at each other and started to giggle.
What are you giggling about? Have I said something funny?
The carer asked whether he had any money, which they all found highly comical, and giggled.
He giggled at the daft things that sometimes happened and helped others to see the funny side of embarrassing procedures.
Milligan laughed and giggled incessantly because he thought his jokes were funny.