Answer: OBSIDIAN

The crossword puzzle answer OBSIDIAN has 3 different clues. We have seen it appear in puzzles 3 times.

Crossword puzzle clues for OBSIDIAN:

• Arrowhead material
• Black glass
• Volcanic glass

Usage in crossword puzzles

• Washington Post Daily Crossword Puzzle - 2004-12-25

Back to crossword answers starting with letter O