Word: cornerstone
Part of speech: Noun
Syllables: cor
ner
stone
Definition: Such a stone used ceremonially, often inscribed with the architect's and owner's names, dates and other details.
Morphemes:
Affix: corner
Language: en
PoS: Noun
Meaning: Denoting a premises that is in a convenient local location, notionally, but not necessarily literally, on the corner of two streets.
Etymology Compounds: Affix: corne
Language: fro
Decoded: corne
Meaning: a horn, projecting point
Affix: stone
Language: en
PoS: Verb
Meaning: To wall with stones.