tear

【原文】
After its stock went on a tear for the last year, supermarket chain Kroger is now worth almost as much ($19.1 billion) as high-end rival Whole Foods ($20.1 billion). And Kroger is up another 2.5% today after announcing it will buy Harris Teeter, which runs a chain of 200 grocery stores in the southeastern U.S.

【単語の意味(日本語)】
裂け目;ほころび