noun
[noncount] melted animal fat
an oily substance
a/the squeaky wheel gets the grease
verb
greases; greased; greasing
[+ obj] :to put a thin layer of grease or oil on (something)
grease the palm of (someone)
or US grease the hand of (someone)
to give (someone) money for doing something illegal or dishonest for you
like greased lightning
US