IPA: //ˈbiːtʃsaɪd//
KK: /ˈbiːtʃsaɪd/
Located next to or along a beach area.
We rented a beachside cottage for our vacation.
Beachside → It is formed from "beach" (from Old English *bæce*, meaning a pebbly shore or riverbank) and "side" (from Old English *sīde*, meaning the lateral part or edge). The word "beachside" refers to the area or side adjacent to the beach.
Picture the "shore" or "riverbank" ('beach') next to the "edge" or "lateral part" ('side') — that's what beachside means, an area next to the beach.