Definition of elfin

• suggestive of an elf in strangeness and otherworldliness; "thunderbolts quivered with elfin flares of heat lightning"; "the fey quality was there, the ability to see the moon at midday"- John Mason Brown
• small and delicate; "she was an elfin creature--graceful and delicate"; "obsessed by things elfin and small"
• relating to or made or done by or as if by an elf; "elfin bells"; "all the little creatures joined in the elfin dance"