Definition of tinman:
(n) :
An uncaring or heartless man; a man lacking, or seeming to lack, feelings, emotions, or concern for others.
(n) :
A maker of tinware; a tinsmith.
(n) :
A dealer in tinware.
(n) :
(genetics) A master gene in the fruit fly Drosophila melanogaster, whose absence causes the fly to develop without a heart.
(n) :
A surname.