n (often 常作 the seaside) [U] land, place, town, etc by the sea, esp a holiday resort 海边, 海滨, 海滨市镇（尤指度假胜地）
*two weeks at the seaside 在海滨的两个星期
* own a house at the seaside 在海滨有自己的房子
* [attrib 作定语] a seaside town, hotel, holiday 海滨的市镇、旅馆、度假. =>Usage at coast1 用法见 coast1.