/zongk, zawngk/ , Slang.
v.i. (often fol. by out)
1. to become unconscious from alcohol or narcotic drugs; pass out.
2. to fall soundly asleep or relax completely: I've got to go home and zonk out.
v.t.
3. to stupefy, as by alcohol or narcotic drugs.
4. to sedate or anesthetize: If the pain gets too bad the doctors will zonk you.
5. to strike or defeat soundly; knock out; clobber.
[ 1945-50; of expressive orig.; -onk perh. copies CONK 2 ]