"If we find from a will, as we do here, that a testator has used a word in a particular sense, we must give it that meaning wherever it occurs in the will. It is the same thing as if a foreign word were used—a case of which I have known. In such a case we have to get at the meaning of the word in English from an ordinary dictionary, and then whenever it occurs give it that English meaning. Of course, the dictionary must be clear; and if we cannot make out what the testator meant, then we have not got the dictionary."