| Main Entry: | |
| Part of Speech: | noun |
| Definition: | accumulation of solid |
| Synonyms: | alluvium, delta, deposition, dregs, drift, grounds, lees, precipitate, precipitation, sediment, settlings, silt |
| Main Entry: | mouth |
| Part of Speech: | noun |
| Definition: | opening |
| Synonyms: | aperture, beak, box, cavity, chops, clam, crevice, delta, door, embouchement, entrance, estuary, firth, fly trap, funnel, gate, gills, gob, harbor, inlet, jaws, kisser, lips, mush, orifice, portal, rim, trap*, yap |
| Main Entry: | flood plain |
| Part of Speech: | noun |
| Definition: | plain bordering a river |
| Synonyms: | alluvial plain, coastal plain, delta, delta plain, floodplain, tidal plain |