also: あさじも
noun
morning frost
Refers to frost that forms in the early morning, often seen on cold days. A straightforward seasonal noun.
今朝は朝霜が降りて、畑が真っ白だった。
This morning there was morning frost, and the fields were completely white.
朝霜で車のフロントガラスが凍っていた。
The car windshield was frozen with morning frost.
Compound of 朝 (あさ, 'morning') and 霜 (しも, 'frost'). The reading あさじも is a rendaku variant.