1. [17C+] to knock down.
2. [late 17C+] to break off relations with, to abandon a person.
3. [late 17C–early 18C] to act in an arrogant manner.
4. [late 18C–1930s] to throw away, esp. to get rid of contraband when threatened by arrest; thus dinging n.
5. [early 19C] to steal by snatching, e.g. a hat.
6. [early 19C] (UK Und.) to pass to a confederate.
7. [1930s] to stub out.
8. [1930s+] (US campus) to turn (someone) down, to blackball; also attrib.
9. [1930s+] to dent, to scratch; thus dinged, scratched, dented.
10. [1960s] (US campus) to reject a request for a date.
11. [1960s+] to kill, to shoot, to be shot dead; in weak use, to be wounded; thus dinged adj.
12. [1920s] (US) to nag.
13. [1970s] in fig. use of sense 1, to astonish, to amaze.
14. [1990s+] to smash into.
[early 19C] of persons or objects, worthless, to be discarded.
[late 17C–mid-19C] (UK Und.) a thug, esp. when he acts as a bodyguard or accomplice, providing the ‘muscle’ for a more skilful villain.
[late 18C] to criticize; to pass on information the hearer does not wish to hear.