Significats de burst bur en anglès

Yes, it was as richly brown as the darkest horse-chestnut you ever saw in a bursting bur!

The open rosewood case, with its soft white lining, was the bursting bur; and within lay his beautiful Infant!

Look at those curves, and that wonderful polish, like the richest brown of the very darkest horse-chestnut you ever saw in a bursting bur!

The whole thing carried out exactly Ronnie's favourite description of his 'cello: "just like the darkest horse-chestnut you ever saw in a bursting bur."