whimberry.

From earlier winberry, a variant of wineberry with regular shortening of the first vowel before a consonant cluster (in wineberry this was prevented or reversed due to analogy). Wineberry is derived from Middle English winberie, wineberie (“grape; type of berry”), from Old English wīnberġe, wīnberie (“grape”, literally “wine-berry”), from Proto-West Germanic *wīnabaʀi, from Proto-Germanic *wīnabasją (“grape; wineberry”), from *wīną (“wine”) (from Latin vīnum (“wine”), possibly ultimately from Proto-Indo-European *weh₁y- (“to twist, wind; etc.”), referring to the vine) + *bazją (“berry”) (further etymology unknown). The assimilation of /nb/ to /mb/ seen in some forms is to be expected (compare hemp from Old English henep). Other forms show the influence of unrelated words; the consonantism of forms with initial wh- is probably due to the influence of whin (“furze, gorse (Ulex europaeus); similar prickly plant”), while windberry clearly represents remodelling as wind + berry.