hydromel

from WordNet (r) 3.0 (2006)

hydromel
    n 1: honey diluted in water; becomes mead when fermented

from The Collaborative International Dictionary of English v.0.48

Hydromel \Hy"dro*mel\, n. [L. hydromel, hydromeli, Gr. ?; "y`dwr
   water + ? honey: cf. F. hydromel.]
   A liquor consisting of honey diluted in water, and after
   fermentation called mead.
   [1913 Webster]