'Cast-iron' definitions:
Definition of 'cast-iron'
(from WordNet)
adjective
Extremely robust; "an iron constitution" [syn: cast- iron, iron]
Definition of 'Cast-iron'
From: GCIDE
- Cast-iron \Cast"-i`ron\, a. Made of cast iron. Hence, Fig.: like cast iron; hardy; unyielding. [1913 Webster]