1. (noun) the quantity that a basin will hold

• basinful

2. (noun) the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet

• catchment area
• catchment basin
• drainage area
• drainage basin
• river basin
• watershed

3. (noun) a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face

• lavatory
• washbasin
• washbowl
• washstand

1. (noun) a bowl-shaped vessel; usually used for holding food or liquids

• aspersorium
• baptismal font
• baptistery
• baptistry
• font
• bidet
• birdbath
• emesis basin
• handbasin
• lavabo
• wash-hand basin
• washbasin
• washbowl
• laver
• stoop
• stoup

2. (noun) a natural depression in the surface of the land often with a lake at the bottom of it

• cirque
• corrie
• cwm
• saltpan
• tidal basin

3. (noun) the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet

• detention basin
• retention basin

1. (noun) a bowl-shaped vessel; usually used for holding food or liquids

• vessel

2. (noun) the quantity that a basin will hold

• containerful

3. (noun) a natural depression in the surface of the land often with a lake at the bottom of it

• depression
• natural depression

4. (noun) the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet

• geographic area
• geographic region
• geographical area
• geographical region

5. (noun) a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face

• sink