| Part of Speech | Definition | |
| Expression | 1. (Min.), basalt, the stone which composes the Giant's Causeway.[Websters]. | |
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Common Expressions: IRISH TOUCHSTONE
| Expressions | Definition | ||
| Irish touchstone | (Min.), basalt, the stone which composes the Giant's Causeway. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||
