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3.
A lazy person of Irish descent who will not perform any honest work.
The narrowbacks stole my potatoes.
by Bill the Cat May 20, 2008
 
1.
A child of Irish immigrants who is considered too soft to do hard physical labor.
"You narrowbacks would never make it in the old country..You don't know what hard work is."
by Kenny From Brooklyn April 22, 2009
 
2.
used as a slang term to refer to inside electrician
(typically 98 )
Lineman refer to inside wireman as narrowbacks
Hey look at that narrowback pulling wire through that conduit.
by humpdog January 31, 2007