трудоемкий
operosus [a, um];
жернов
lapis, idis, m
подковообразный
hippocrepicus [a, um];
exemplum [i, n] (specimen [inis, n]) primarium (originarium);
exemplar [is, n] primigenium;
scriptum [i, n] authenticum;
originale [is, n];
autographum [i, n];
archetypum [i, n];