Definition of dullahan:
(n) :
(fantasy, Irish mythology) A black-clad (usually male) horserider in Irish folklore which carries its severed head like a lantern and may be repelled by gold; when it stops riding (or calls out someone's name), someone will die. (Also called the Gan Ceann, Irish for "[one] without a head".)
(n) :
A surname from Irish.
(n) :
Alternative letter-case form of dullahan. [(fantasy, Irish mythology) A black-clad (usually male) horserider in Irish folklore which carries its severed head like a lantern and may be repelled by gold; when it stops riding (or calls out someone's name), someone will die. (Also called the Gan Ceann, Irish for "[one] without a head".)]