"detached shirt front," 1811; "a small bird," 1851; diminutive of dick, but the applications are obscure in both cases.

Adj. Unsound, likely to fail, unhealthy. Also spelt dickey and dickie. E.g."You can't seriously expect me to lift that box when you know I've got a dicky heart."

(n) a small third seat in the back of an old-fashioned two-seater(n) a man's detachable insert (usually starched) to simulate the front of a shirt(adj) (British informal) faulty

in George III.’s time, meant a flannel petticoat. It was afterwards applied to what were called false shirts—i.e. a shirt front worn over a dirty shirt, or in lieu of a shirt. These [..]

Nickname for anyone with the surname of Bird.

a small seat fitted in the angle between the transom and the gunwale/top strake

A naval; diminutive adjective; e.g., a "Dicky run ashore" is a short spell of shore leave, a "Dicky flannel" is the short flannel (or vest) worn by seamen with blue uniform in the [..]