A person who milks cows, or historically, a type of insect or parasite that feeds on cattle.
Compound of 'cow' and 'sucker' (from 'suck', Old English 'sucan'). The term can refer to both human workers and parasitic creatures that derive nutrition from cattle.
The biological reality is fascinating: cow parasites like bloodsucking flies can literally drain hundreds of pounds of blood from cattle herds annually, making them economically significant pests that shaped ranching practices worldwide.
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