One who laps liquid, who takes liquid in with the tongue.
...that recipient of the favors and caresses of the hearthstone, that lapper of milk from the national saucer, the cat.1913, William Atherton Du Puy, Uncle Sam, Wonder Worker, page ?:
The pupils of the modern school discover in [the lion] but the crafty, cruel, and cowardly lapper of blood.1827, ?, Blackwood's Edinburgh Magazine, page 470:
2
In compounds Something (especially a race) that has a stated number of laps.
[…] Richard Petty Private Collection outran Buck Baker's '62 Chrysler to win the 200-lapper. One week later, Jim Paschal finished second to race winner Junior.2001, Tim Bongard, Richard Petty: The Cars of the King, page ?:
3
Hobbies, Lifestyle, Sports A competitor who is one lap behind another, in the same race, and hence physically in front.
June 2006, RoadRacingWorld.com - Stanton Tops Formula Pacific Podium In Fourth Round Of AFM Racing At Thunderhill After he tangled with the lapper I thought, ‘Man, that sucks’,” Dorsey explained. “Then I realized I was in the lead! I was going to just cruise home.
4
One who wraps or folds.
5
A mechanism that overlaps material to make it thicker; a lapping cylinder or lapping machine.
To make a gentle splashing sound, as the sound of flowing water.
There was mockery of our foolhardy enterprise in the soft whispering sough of the water, as I heard it lapper beneath the ferry-boat that lay ready to cross to the other side.1900?, S.R. Crockett, chapter XXXVII, in The Red Axe, →ISBN, page 238: