A principal mountain mass.
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
{{quote-text|en|year=2011|author=John Jeremiah Sullivan|title=Pulphead
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massive
weighty, massy, weighing very much.
massive, huge, enormous.
not sharp, unsharpened, coarse.