Word: rimstones
Part of speech: Noun
Syllables: rim
stones
Definition: Plural of rimstone;  is a type of speleothem (cave formation) in the form of a stone dam
Morphemes:
Affix: rim
Language: en
PoS: Verb
Meaning: To form a rim on.
Affix: stone
Language: en
PoS: Verb
Meaning: To wall with stones.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).