Yes, dial is a Scrabble word!

Verb

1. Operate a dial to select a telephone number

2. Choose by means of a dial

Noun

1. The face of a timepiece; graduated to show the hours

2. The control on a radio or television set that is used for tuning

3. The circular graduated indicator on various measuring instruments

4. A disc on a telephone that is rotated a fixed distance for each number called