Adjective

(er)

Thin; slim.

*{{quote-book, year=1963, author=(Margery Allingham)

, title=(The China Governess) , chapter=3 citation , passage=Sepia Delft tiles surrounded the fireplace, their crudely drawn Biblical scenes in faded cyclamen blending with the pinkish pine, while above them, instead of a mantelshelf, there was an archway high enough to form a balcony with slender balusters and a tapestry-hung wall behind.}}

(Gaelic languages)  Palatalized.

Adjective

(wikipedia undefined) (-)

Lacking a definition or value.

(mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

The result of division by zero is undefined .