Yes, zinc is a Scrabble word!
...and is worth 15 points in Scrabble, and 17 points in Words with Friends
zinc
Verb
1. Coat or cover with zinc
Noun
1. A bluish-white lustrous metallic element; brittle at ordinary temperatures but malleable when heated; used in a wide variety of alloys and in galvanizing iron; it occurs naturally as zinc sulphide in zinc blende
What Scrabble words can I make with the letters in zinc?
3 Letter Words
2 Letter Words