Definition of lubricate verb from the Oxford Advanced Learner's Dictionary

lubricate

verb
ˈluːbrɪkeɪt
 
; ˈluːbrɪkeɪt
 
 
lubricate something to put a lubricant on something such as the parts of a machine, to help them move smoothly
Synonym
grease
, oil
lubrication
ˌluːbrɪˈkeɪʃn
 
; ˌluːbrɪˈkeɪʃn
 
noun [uncountable]