Word: nightlights
Part of speech: Noun
Syllables: night
lights
Definition: Plural of nightlight; light that shines at night such as moonlight, starlight, etc.
Morphemes:
Affix: night
Language: en
PoS: Noun
Meaning: Darkness (due to it being nighttime).
Affix: light
Language: en
PoS: Noun
Meaning: A source of illumination.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).