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Webster 1913 Edition

Adj.

Cold as a metallic key; lifeless.

[Formerly, a proverbial expression.]

Shak.

Milton.

Adj.

Lifeless. [Not in use.]

key-cold ‎(not comparable)

(obsolete) Cold as a metallic key; lifeless.

Poor key-cold figure of a holy king — Shakespeare, King Richard III (act 1 scene ii).

Her apostolic virtue is departed from her, and hath left her key-cold — Milton.