RUST (βρῶσις [fr. βιβρώσκω, Lat. voro, ‘to eat.’ Properly the act of eating, and so ‘corrosion’], Matthew 6:19 f.; also used for ‘food,’ John 4:32; John 6:27; John 6:55).—The corroding influence liable to tarnish treasures or precious metals, which in Eastern countries were often stored in the ground (Matthew 13:44) or on inhabited premises (Luke 15:8).
C. H. Prichard.