Answer: decker

AnswerCrossword Clue
DECKER

Black's toolmaking partner

DECKER

Triple-... (club sandwich)

DECKER

Double-... bus

DECKER
Double-.. sandwich
DECKER
Black's partner
DECKEREmbellisher.
DECKERThree-... sandwich.
DECKERClassic London transport
DECKERTrack's Mary ... Slaney
DECKERWith "triple," it's a sandwich