San·ta Ger·tru·dis 
(săn′tə gər-trdĭs)
(săn′tə gər-trdĭs)n. pl. Santa Gertrudis
Any of a breed of large beef cattle that are highly resistant to heat and insects, developed in the United States by crossing Brahmans and shorthorns.
[After the Santa Gertrudis section of the King Ranch in Kingsville, Texas.]