A horn regarded as or alleged to be obtained from the unicorn.
Origin
Late 17th century (in an earlier sense). From Italian alicorno unicorn, medicinal substance made from the horn of a unicorn, ultimately showing a variant or alteration of classical Latin ūnicornis.
Definition of alicorn in US English:
alicorn
nounˈalɪkɔːn
historical
A horn regarded as or alleged to be obtained from the unicorn.
Origin
Late 17th century (in an earlier sense). From Italian alicorno unicorn, medicinal substance made from the horn of a unicorn, ultimately showing a variant or alteration of classical Latin ūnicornis.