(marketing) An order form ready to be mailed (i.e. printed on a postcard or accompanied by an envelope etc.), sent out as part of a marketing campaign.

plural of reply device

The plant mandrake, especially when used in black magic.

plural of devil's candle

(mathematics, informal) Synonym of Cantor function; a type of monotonic increasing function.

A waterfall in Wassen Creek, Devil’s Staircase Wilderness, Siuslaw National Forest, Oregon, United States; a multi-tiered low cascading waterfall.

A village in Ceredigion, Wales (OS grid ref SN7376).

plural of devil ray

The orange hawkweed, Pilosella aurantiaca. / (slang, historical) A Maxim gun.

Any of the rays of the genus Mobula, especially Mobula birostris, the manta ray.