| Webster's Online Dictionary |
| Part of Speech | Definition | |
| Expression | 1. (Min.), a slaty rock, consisting essentially of hornblende and feldspar, useful for flagging on account of its toughness.[Websters]. | |
| Top | ||
| Expressions | Definition | ||
| Hornblende slate | (Min.), a slaty rock, consisting essentially of hornblende and feldspar, useful for flagging on account of its toughness. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||