Pavonine

1. [adj.] Of, pertaining to, resembling or characteristic of a peacock.
2. [adj.] Resembling the neck or the tail of the peacock in colouring.
3. [Zoological] [adj.] Of or pertaining to the genus Pavo or sub-family Pavoninæ, which includes the peafowl.
4. [Zoological] [noun] A bird of the sub-family Pavoninæ.
5. [Chemistry, Geology] [noun] An iridescent lustre or tarnish found on some ores and metals.

From the Latin pāvōn-em peacock.