1. Used of persons; emotionally hardened
   "faced a case-hardened judge"
   - hardened, hard-boiled

1. To subject to a process which converts the surface of iron into steel 
2. To render insensible to good influences

See also: hard

• pulse generator
• pulse height analyser
• pulse height analyzer
• pulse modulation
• pulse rate
• pulse timing circuit
• pulse-time modulation
• pulseless
• pulseless disease
• pulsing
• pulverisation
• pulverise
• pulverised
• pulverization
• pulverize
• pulverized
• pulverulent
• puma
• pumice
• pumice stone
• pumiceous
• pummel
• pummelo
• thyrsus
• Thysanocarpus