the tissue in the brain and spinal cord composed of nerve cell bodies, as opposed to white matter.

used metaphorically to refer to intellect or brainpower.

बुद्धि

English Usage: He relied on his gray matter to solve complex problems.

Hindi Usage: उसने जटिल समस्याओं को हल करने के लिए अपनी बुद्धि पर भरोसा किया।