massymore

Probably from Spanish mazmorra (“dungeon”) (Portuguese masmorra). Doublet of mattamore.

• IPA^(key): /ˈmæ.sɪ.mɔː/

massymore (plural massymores)

1. (Scotland, archaic) The dungeon of a castle.
   • 1820, [Walter Scott], chapter V², in The Abbot. […], volume III, Edinburgh: […] [James Ballantyne & Co.] for Longman, Hurst, Rees, Orme, and Brown, […]; and for Archibald Constable and Company, and John Ballantyne, […], →OCLC, page 177:

     “Seize her and drag her to the Massymore!—To the deepest dungeon with the sorceress, whose master, the Devil, could alone have inspired her with boldness enough to insult the mother of Douglas in his own castle.”