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Webster 1913 Edition
Dap
Dap
(dăp)
, Verb.
 I.
 [Cf. 
Dip
.] (Angling) 
To drop the bait gently on the surface of the water. 
To catch a club by 
dapping 
with a grasshoper. Walton.
Webster 1828 Edition
Dap
DAP
,Verb.
I.