On the Dallas Stars site, there is a write up on how teams got their names:
Buffalo Sabres – When the city of Buffalo was awarded a franchise, the owners, brothers Seymour and Northrup Knox, had a few criteria for what they wanted in a name. They were looking for one that was not in use by any other professional franchise, could be easily used in their marketing campaigns and stayed away from the traditional Buffalo references like Bills, Bison or Braves. A contest was held and from over 13,000 entries, only four offered Sabres. But, the name was exactly what the team wanted.
Buffalo Sabres – When the city of Buffalo was awarded a franchise, the owners, brothers Seymour and Northrup Knox, had a few criteria for what they wanted in a name. They were looking for one that was not in use by any other professional franchise, could be easily used in their marketing campaigns and stayed away from the traditional Buffalo references like Bills, Bison or Braves. A contest was held and from over 13,000 entries, only four offered Sabres. But, the name was exactly what the team wanted.