Answer: lubricates

AnswerCrossword Clue
lubricatesApply a substance such as oil or grease to (an engine or component) to minimize friction and allow smooth movement
lubricatesMake (a process) run smoothly
lubricatesMake (something) slippery or smooth by applying an oily substance
lubricatesMake someone convivial, esp. with alcohol
lubricatesLUBRICATE, to make smooth or slippery