A stele is a large upright wooden or stone tablet.
Mnemonic
[b-] Bart Simpson is in [1] front of the [-(e)i] beach house by the bay where he is erecting a giant 碑 stele made of 石 stone in the sand in front of the house. It depicts a nasty looking 卑 mole-rat riding a skateboard. Bart sits there in his swimming trunks wearing sunshades piling sand around the 碑 stele to make sure it stays up and is not blown down by the fierce bay winds.