The term "miscible" refers to two or more substances that are capable of being mixed together to form a uniform solution. In a miscible mixture, the molecules of the substances can freely intermingle and dissolve into each other. This property is commonly observed in liquids, such as water and ethanol, that can completely blend with each other.
Not miscible means that two substances are unable to mix together to form a single phase, typically due to differences in polarity or solubility. This can result in the formation of distinct layers or phases when the substances are combined.
Glycerin is miscible in water, while kerosene is not. Glycerin is a polar molecule with hydrogen bonding capabilities, allowing it to mix well with water. Kerosene is non-polar and hydrophobic, so it does not mix with water.
A solution in which the solvent is not water would still be called a solution. If you really needed to emphasise the fact that it wasn't water, you might refer to it as a 'non-aqueous solution'