Meaning
ぐらい (gurai) is a JLPT N1 vocabulary word meaning “approximately”.
Example sentences 1
"そして、とても熱い灰や大きな石が飛んでくる可能性があるため、火口から2kmぐらいの所には行かないように言っています。"
They said that because of the possibility of very hot ash and big flying rocks, you should not go within 2 kilometers from the crater.