claustrarius
From LSJ
οὐκ ἂν λάβοις παρὰ τοῦ μὴ ἔχοντος → you can't take from one who doesn't have, you can't squeeze blood out of a turnip, you can't get blood out of a turnip, you can't get blood from a stone, you can't get blood out of a stone
Latin > English (Lewis & Short)
claustrārĭus: a, um claustra,
I pertaining to locks: artifex, a locksmith, Lampr. Elag. 12.
Latin > French (Gaffiot 2016)
claustrārĭus, a, um, de serrure : claustrarius artifex Lampr. Hel. 12, 2, serrurier.
Latin > German (Georges)
claustrārius, a, um (claustra), zu den Schlössern gehörig, artifex, Schlosser, Lampr. Heliog. 12, 2: Plur. subst., claustrāriī, ōrum, m., Schlosser, Lampr. Alex. Sev. 24, 5.