It appears to be a kind of picklock, an open sesame, Tanner—Tawno!
A picklock lay on the floor, which told me how she had gained entrance in the night.
He was so excellent a lawyer, that he was called The Picklock of the Lawe.
Oddly enough the picklock to the captives' minds had been produced by the dolphins.
I know them; I have the key, or the picklock to their minds.