Webster's English Dictionary

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lubricate

lu.bri.cate \'lu:-br*-.ka-t\ \.lu:-br*-'ka--sh*n\ \'lu:-br*-.ka-t-iv\ 
   \-.ka-t-*r\ vb [L lubricatus, pp. of lubricare fr. lubricus slippery - 
   mor]e at SLEEVE 1: to make smooth or slippery  2: to apply a lubricant to  
   : to act as a lubricant  - lu.bri.ca.tion n