A Low, Whispered Hum or Buzz of Conversation

This page is the CodyCross answer for the clue below from Café, Group 1339, Puzzle 5 (Reservations).

Question is: A Low, Whispered Hum or Buzz of Conversation

and the answer is: MURMUR

Word Meaning:

MURMUR — (countable, uncountable) Any low, indistinct sound, like that of running water.

Definitions from Wiktionary.