Call me! (3)
(Other definitions for madam that I've seen before include "Formal address to a woman - precocious little girl" , "Stuck-up girl" , "Leader of House of Congress" , "Woman running a brothel" , "precocious schoolgirl?" .)
(Other definitions for maybe that I've seen before include "Perhaps, might happen" , "Perhaps, possibly" .)
(Other definitions for cab that I've seen before include "Transport" , "Hired car" , "Organisation to collect money made from crime" , "'The authority collects money made from crime, initially (3)'" , "A taxi in New York" .)