1. the area of land next to the sea; the seashore

1. located at or near the sea

Examples

• We spent our vacation at the seaside.
• The children built sandcastles at the seaside.
• Many families visit the seaside during summer.
• The seaside town was full of tourists.
• She bought a seaside cottage for retirement.
• The seaside restaurant served fresh seafood.
• Walking along the seaside is very relaxing.