beachEnglishOxford American Thesaurusbeach noun a fabulous sandy beach: seaside, seashore, shore, coast, coastline, coastal region, seaboard, foreshore, water's edge, margin; sands, sand, shingle, (sand) dunes; lido; dated plage; technical littoral; literary strand.verb 1 they checked for places where minor craft could beach: land, reach the shore, run ashore; ground, be grounded, run aground; shipwreck, wreck, run on the rocks, be high and dry. ▷antonyms put to sea, depart. 2 sixty common dolphins have been beached on Cornish shores: make/become stranded, make/become beached, strand, ground, get stuck. 3 he managed to beach a fine trout: catch, capture, land, hook, reel in.