close-cropped head; shaven head; bald head
Refers to a completely shaved or very closely cropped head, often associated with Buddhist monks or a fresh start.
He shaved his head to show his determination.
お坊さんはみんな丸坊主だ。
All the monks have shaven heads.
treeless; leafless; bald; bare
Describes a mountain, hill, tree, or shrub that is completely bare of vegetation or leaves, likened to a bald head.
山火事の後、山は丸坊主になってしまった。
After the wildfire, the mountain became completely bare.
冬になるとこの木は丸坊主になる。
In winter, this tree becomes completely leafless.