dicky-seat vs dickey-seat

dicky-seat and dickey-seat both are nouns.

Word	Noun	Adjective	Verb	Adverb
dicky-seat	Yes	No	No	No
dickey-seat	Yes	No	No	No

As nouns, dicky-seat and dickey-seat are synonyms defined as:

dicky-seat and dickey-seat: a small third seat in the back of an old-fashioned two-seater

Other synonyms of dicky-seat include dickey, dickie-seat, dickie, dicky.

dicky-seat (noun)	dickey-seat (noun)
a small third seat in the back of an old-fashioned two-seater	a small third seat in the back of an old-fashioned two-seater