Plural of bossy; can refer to multiple domineering people or, in some dialects, to cattle (particularly cows).
From 'bossy' which comes from 'boss' plus the diminutive/familiar suffix '-y'. The cattle sense is likely influenced by 'bovine' or a folk etymology connecting cattle sounds to the word.
In South African and Australian English, 'bossy' or 'bossies' is a common word for cattle—completely unrelated to the domineering sense! This shows how the same word can have totally different meanings in different English-speaking regions.
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