lacūnāriusm (genitivelacūnāriī); second declension
gravedigger
1st century BCE, Glossarium Philoxeni II.358.14, (λάκκος + ποιός; quoted in L&S [Gloss. Philox.], misspelled as λακκοπολός; quoted in Georges [Gloss. II, 358, 14.]):
lacūnārius, λᾰκκοποιός
lacūnārius, making wells or cisterns
c. 334 CE – 337 CE, Julius Firmicus Maternus, Matheseos Libri VIIILiber VIII.Cap XXI