A bellow of delight typically refers to a loud, deep cry or shout expressing great joy or pleasure. It is a boisterous and enthusiastic way of showing happiness or excitement.
tickle the tongue
English delight
Delight (noun) means great pleasure. The verb can mean to take pleasure in or to provide pleasure, to please or satisfy.
The origin is latin, and meaning 'pleasure', or 'delight'.
A state of great rapture and delight
divert
Taking delight in disorder and confusion.
it is an exclamation of delight, and was a war cry for the British.
Father's delight or Father's joy
delicia = delight, satisfaction; sensual pleasure
no someone who is quiet is not a bellow
Bellow means almost the same as roar.