spring moon; misty moon
Poetic term for the moon in spring, often associated with a hazy, misty appearance. Compare 朧月 (oborozuki), which specifically refers to a hazy spring moon.
See also: 朧月
The spring moon looks faintly hazy.
Compound of 春 (haru, 'spring') + の (no, possessive particle) + 月 (tsuki, 'moon'). The reading is straightforward.