KEY n.
of a country; the key of a political situation. Hence, that which serves to unlock, open, discover, or solve something unknown or difficult; as, the key to a riddle; the key to a problem. Those who are accustomed to reason have got the true key of books. Locke. Who keeps the keys of all the creeds. Tennyson.…
LEAD n.
arm the lead, to fill the hollow in the bottom of a sounding lead with tallow in order to discover the nature of the bottom by the substances adhering. Ham. Nav. Encyc. -- To cast, or heave, the lead, to cast the sounding lead for ascertaining the depth of water. -- White lead, hydrated carbonate of lead, obtained as…
LOGOGRIPH n.
A sort of riddle in which it is required to discover a chosen word from various combinations of its letters, or of some of its letters, which form other words; -- thus, to discover the chosen word chatter form cat, hat, rat, hate, rate, etc. B. Jonson.