† Chelidony Obs.
Forms: 6 chalydony, 7 chelydoin.
[ad. L. chīlidonius (lapis), F. chelidoine.]
The same as celidony2.
| 1586 Bright Melanch. xxxix. 257 The chalydony, or swallowe stone, found in the mawes of young swallowes. 1622 Peacham Compl. Gentl. (1661) 171 Diamond, Agate, or Chelydoin. |