WordNet (r) 3.0 (2006):

Vaccaria
    n 1: cow-cockles [syn: Vaccaria, genus Vaccaria]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

VACCARIA, old Eng. law. A word which is derived from vacca, a cow, and
signifies a dairy-house. Co. Litt. 5 b.