The level of a body of water, especially when measured above a datum line. / The level of the water table below ground. / The waterline of a ship.

(tool) A tool employing a chamber with a colored liquid (usually alcohol, hence spirit) and an air bubble, used to determine a horizontal or vertical reference line.

(rail transport) An at-grade junction between two crossing railroad tracks.

(meteorology) The altitude at which the temperature of the atmosphere is 0°C at a specific location

The depth of snow accumulated on the ground. / (meteorology, chiefly Western US) The altitude, in a mountainous region, above which precipitation falls as snow.

Of a building: built with rooms on levels separated by stairs of less than a full storey. / Anything else built on two levels.

A building of this kind.

Alternative spelling of split-level

Alternative spelling of split-level / A single level of a split-level house.

Simple enough to be appropriate to an inexperienced person, or to someone who does not need advanced features.