Clue: Keep quiet about little Italian restaurant by river steps at Aviemore? (10)
Answer: STRATHSPEY
Explanation: Definition: steps at Aviemore?

**SH** ("keep quiet") *about* **TRAT**(toria) (*little* "restaurant") *by* (River) **SPEY**
 
*The Strathspey is a traditional Scottish dance, hence "steps at Aviemore".