a type of drop front desk with a small cabinet on top that has sliding tambour panels that open to reveal the interior

A roll-top desk's flexible draw-down cover made of "tambours," which is made up of a succession of narrow strips of flat wood glued to a stiff backing such as canvas. Find home office furniture.

Rolltop desk with a cover made of tambours, a series of narrow slats of wood glued to a strong cloth. The tambour edges slide up and down in grooves along the edges of the desk frame.

a roll-top desk where the roll-top is made of thin strips of wood

A tambour desk is a desk with desktop-based drawers and pigeonholes, in a way resembling a bit that of a bureau a gradin. The small drawers and nooks are covered, when required, by reeded or slatted shutters which usually retract in the two sides, left and right. It is a flatter and "sideways" version of the rolltop desk.