When a tree or plant is leafless, it doesn't have any leaves. This means that the plant is not getting the sunlight that it needs to grow.
The tree is leafless because it's in the process of dying.
The tree is leafless because the leaves are frozen.
adjective
having no leaves
1
Hilde sees the lifeless and leafless pear tree in the village.
2
From a distance it may appear leafless.
3
Leafless trees stand at the top of the gorge.
4
Behind the signpost are several leafless trees.
5
His symbol is a leafless tree in a field of snow.
6
The flowers form an umbel at the top of a leafless stalk.
7
The canopy is mostly leafless during the dry winter.
8
Each flower grows on a long, green, leafless stem.
9
The tree is leafless for up to 4 or 5 months of the year.
10
The trees have become wind beaten, gnarled, leafless trunks.