ebon

[eb-uh n] /ˈɛb ən/
adjective
1.
ebony (def 6).
Origin
1350-1400; Middle English eban, ebyn ebony < Anglo-French eban(ne), Old French eban, ebaine < Medieval Latin ebanus, for Latin (h)ebenus < Greek ébenos, of Semitic orig.
British Dictionary definitions for ebon

ebon

/ˈɛbən/
noun, adjective
1.
a poetic word for ebony
Word Origin
C14: from Latin hebenus; see ebony
Word Origin and History for ebon

"ebony wood, ebony tree," mid-15c.; see ebony. Figurative sense of "dark, black" is from 1590s; in some cases a poetic shortening of ebony.