opoka
//ɔˈpɔ.ka//
Polishnoun
Definitions
- 1.bedrock, pillar, tower of strength
- 2.bedrock, rock (rocky ground)
- 3.gaize (mixed rock, composed of organogenic silica (opal, chalcedony, mostly derived from siliceous sponges), and calcium carbonate)
Synonyms & related words
Etymology
Inherited from Proto-Slavic *o(b)poka. Compare Czech opuka.