Noun dickey has 2 senses

• dickey(n = noun.artifact) dickey-seat, dickie, dickie-seat, dicky, dicky-seat - a small third seat in the back of an old-fashioned two-seater; Array
is a kind of backseat

• dickey(n = noun.artifact) dickie, dicky, shirtfront - a man's detachable insert (usually starched) to simulate the front of a shirt; Array
is a kind of insert, inset
is a part of shirt
Derived form adjective dickey₁

Adjective dickey has 1 sense

• dickey(s = adj.all) dicky - (British informal) faulty; "I've got this dicky heart"
Derived form noun dickey₂