means A pig, or a hog — the domesticated animal raised for meat — often used figuratively as an insult for someone greedy, filthy, or contemptible.

from From Old English 'swīn,' a word stretching back through Proto-Germanic '*swīnan' (cousin to German 'Schwein' and Dutch 'zwijn') to a Proto-Indo-European root '*su-,' which also gave us 'sow.' The same ancient '*su-' echoes in Latin 'sus' and Greek 'hus,' suggesting people across Europe have been naming this animal with strikingly similar sounds for thousands of years. The insulting sense — a 'swine' as a loathsome person — is a much later turn, layering human contempt onto a creature that, as the essence notes, never quite earned it.