Roman alum
now historical
noun
A reddish native alum found in Italy, or a manufactured imitation of this.
Origin
Mid 17th century; earliest use found in James Howell (?1594–1666), historian and political writer.
- royal octavo
- royal palm
- royal pardon
- royal patronage
- royal pendulum
- royal plural
- royal pole
- royal prerogative
- royal purple
- royal python
- royal quarto
- royal refugee
- royal road to
- royal sail
- Royal Scot
- Royal Shakespeare Company
- Royal Society
- Royal Society for the Prevention of Cruelty to Animals
- Royal Society for the Protection of Birds
- Royal Society of Arts
- Royal Society of London
- Royal Sovereign
- royal spoonbill
- royal stag
- royal standard