Does everyone know about elbow grease? Is it a Southern phrase? Do you have to be of a "certain age" to know about it? For those who may not know, elbow grease is hard work--often literal vigorous scrubbing, as in "you can get those brass plaques clean with some polish and some elbow grease," but often figuratively, as in "getting that promotion will require some elbow grease on your part." ...

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