Word: thornbacks
Part of speech: Noun
Syllables: thorn
backs
Definition: Plural of thornback. A woman over a certain age (variously 26 or 30) who has never married, older than a spinster.
Morphemes:
Affix: thorn
Language: en
PoS: Verb
Meaning: To pierce with, or as if with, a thorn
Affix: back
Language: en
PoS: Noun
Meaning: The rear of the body, especially the part between the neck and the end of the spine and opposite the chest and belly.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).