1) Cat with a bowl of milk 2) Drinking dog 3) Kitten, at times 4) Thirsty dog 
• (n.) One who takes up food or liquid with his tongue.
Lap'per noun [ From La p to drink.] One who takes up food or liquid with his tongue. 
A foresail which extends back of and overlapping the mast, such as a 110% genoa jib.
In motorcycle racing, a slow rider who is being lapped by the leaders.