Knolled

The bell knolled slowly but loudly.

Source: wiktionary

That part of the material resting on the rock maintained its form, except as included masses of ice left pits when they melted, developing the knolled and pitted surface to which is given the name "kame terrace" or morainal terrace.

Source: wiktionary

Because I now have an eye-line view of the tree, I notice how beautifully it is set against the double-knolled hill behind it. That mounded rise is topped with boulders that, […]

Source: wiktionary