Why is the ninth month called September?
1805, "to pluck a stringed instrument;" 1808 in sense of "drop down abruptly;" 1888 as "to hit, wound, shoot." Probably of imitative origin in all cases. Related: Plunked; plunking.
Precisely; exactly; squarely; smack
[1734+; fr plumb]
A dollar: my five thousand plunks (1891+)verb
To shoot (1888+)