πάντα πόνος τεύχει θνητοῖς μελέτη τε βροτείη → all things are made for mortals by human toil and care
clustrum clustri N N :: bolt (gate/door); key; bars (pl.), enclosure; barrier; door, gate, bulwark; dam
clūstrum, s. claustrum.
clustrum, c. claustrum : N. Tir. 50, 90.