Word: massifs
Part of speech: Noun
Syllables: ma
ssifs
Definition: Plural of massif; a block of the earth's crust bounded by faults and shifted to form peaks of a mountain range
Morphemes:
Affix: massif
Language: en
PoS: Noun
Meaning: A block of the earth's crust bounded by faults or flexures and displaced as a unit without internal change; normally consists of gneisses and schists
Etymology Compounds: Affix: μᾶζα
Language: grc
Decoded: maza
Meaning: barley-cake, lump 
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).