From the Lat. lucrum, "gain." 1 Timothy 3:3, "not given to filthy lucre." Some MSS. have not the word so rendered, and the expression has been omitted in the Revised Version.
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Easton, Matthew George. "Entry for 'Lucre'". "Easton's Bible Dictionary".