- To stupefy; stun.
- To intoxicate with drugs or alcohol: "zonk their patients with tranquilizers” ( Psychology Today).
- To become intoxicated with drugs or alcohol.

Z10 - O1 - N1 - K5 has 17 points in Scrabble!

Z10 - O1 - N2 - K5 has 18 points in Words with Friends!

Found in the OTCWL2014, SOWPODS, ENABLE, and WWF dictionaries