noun, masculine/a.ba.twaʁ/plural: abattoirs
abattoir, slaughterhouse (place where animals are slaughtered); abattoir, slaughterhouse (place or event likened to a slaughterhouse, because of great carnage or bloodshed)
“Cet abattoir est vaste et bien aéré.” — This slaughterhouse is large and well-ventilated.
From abattre (“to slaughter, butcher”) + -oir (suffix).