Answer: plug

AnswerCrossword Clue
PLUGOver-the-hill horse
PLUGWord after spark or shameless
PLUGOutlet insert
PLUGPublicize insistently
PLUGTransplanted hair
PLUGWorn-out horse
PLUGPart of an electrical appliance
PLUGSpark or fire follower
PLUGCommercial endorsement
PLUGOutlet insertion
PLUGFree advertisement
PLUGPut in a good word for
PLUGStop
PLUGBallyhoo
PLUGCommercial pitch
PLUGPronged connector
PLUGSpark add-on
PLUGSink stopper
PLUGPromote, in a way
PLUGAuto tune-up insert
plugto disconnect life-sustaining equipment from (a moribund patient)
PLUGBlatant promotion
PLUGDrain filler
PLUGStopper
PLUGCork
PLUGHype
PLUGPromote
PLUGAdvertise
PLUGEndorse
PLUGImpromptu ad
PLUGAd-libbed ad
PLUGElectrical connector
PLUGShameless promotion
PLUGStop up
PLUGGood word
PLUGFavorable word
PLUGSocket insert
PLUGOutlet connection
PLUGAdvertisement
PLUGTalk show guest's blatant promotion