Clue: Toughen, as glass

We have 1 answer for the crossword clue Toughen, as glass.

Possible Answers:

• ANNEAL

Related Clues:

• Free from stress by heating, as metal
• Heat and then cool
• Irish port
• Make less brittle
• Make metal less brittle
• Make tough
• Make tougher
• Strengthen by tempering
• Temper
• Temper, as glass
• Temper, as metal
• Temper, as steel
• Toughen
• Toughen by heating, as glass

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