approximately; about; to the extent
Indicates an approximate amount or degree, often with a sense of 'about' or 'to the extent that'.
くらい/ぐらい has two main uses. First, it marks an approximate quantity or extent, like 'about' or 'approximately'. For example, 十分くらい means 'about ten minutes'. Second, it expresses a degree or extent, often in comparison, meaning 'to the extent that' or 'as much as'. For instance, 死ぬくらい疲れた means 'so tired I could die'. In this use, it often follows the plain form of verbs or adjectives.