Toughened - Definition
toughened
adj 1: physically toughened; "the tough bottoms of his feet"
[syn: tough, toughened] [ant: tender,
untoughened]
2: made hard or flexible or resilient especially by heat
treatment; "a sword of tempered steel"; "tempered glass"
[syn: tempered, treated, hardened, toughened] [ant:
unhardened, untempered]