dickie-seat vs dickey-seat

dickie-seat and dickey-seat both are nouns.

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

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

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

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

dickie-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