Easton's Bible Dictionary

Of water like a dog, i.e., by putting the hand filled with water to the mouth. The dog drinks by shaping the end of his long thin tongue into the form of a spoon, thus rapidly lifting up water, which he throws into his mouth. The three hundred men that went with Gideon thus employed their hands and lapped the water out of their hands (Judges 7:7).

Noah Webster's New International Dictionary of the English Language

1. (p. pr. & vb. n.) of Lap.

2. (n.) A kind of machine blanket or wrapping material used by calico printers.