Word: sills
Part of speech: Noun
Syllables: sills
Definition: Plural of sill; a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock
Morphemes:
Affix: sill
Language: en
PoS: Noun
Meaning: ridge; rise; horizontal layer of igneous rock between older rock beds.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form the plural of nouns that correctly take just an "s" in the plural. See greengrocer’s apostrophe.