n. Chiefly Northeastern US
Thick, soured milk eaten with cream and sugar, honey, or molasses.
[Irish Gaelic bainne clabair : bainne, milk (from Middle Irish, drop, milk, from Old Irish bannae, drop, perhaps of Brittonic origin; akin to Breton and Middle Cornish banne, drop) + probably clabair, genitive of clabar, dasher of a churn (possibly from Old Irish clapar, word of uncertain meaning—possibly "dasher of a churn"—used to refer to the penis).]
(Cookery) clotted or curdled milk
bon•ny•clab•ber(ˈbɒn iˌklæb ər)
Midland U.S. clabber (def. 1).
[1625–35; < Irish bainne clabair literally, milk of the clapper (i.e., of the churn lid or dasher)]