'Ram's horn' definitions:

Definition of 'ram's horn'

noun

Annual of southern United States to Mexico having large whitish or yellowish flowers mottled with purple and a long curving beak [syn: common unicorn plant, devil's claw, common devil's claw, elephant-tusk, proboscis flower, ram's horn, Proboscidea louisianica]

From: GCIDE

Ram \Ram\ (r[a^]m), n. [AS. ramm, ram; akin to OHG. & D. ram, Prov. G. ramm, and perh. to Icel. ramr strong.]
1. The male of the sheep and allied animals. In some parts of England a ram is called a tup. [1913 Webster]
2. (Astron.) (a) Aries, the sign of the zodiac which the sun enters about the 21st of March. (b) The constellation Aries, which does not now, as formerly, occupy the sign of the same name. [1913 Webster]
3. An engine of war used for butting or battering. Specifically: (a) In ancient warfare, a long beam suspended by slings in a framework, and used for battering the walls of cities; a battering-ram. (b) A heavy steel or iron beak attached to the prow of a steam war vessel for piercing or cutting down the vessel of an enemy; also, a vessel carrying such a beak. [1913 Webster]
4. A hydraulic ram. See under Hydraulic. [1913 Webster]
5. The weight which strikes the blow, in a pile driver, steam hammer, stamp mill, or the like. [1913 Webster]
6. The plunger of a hydraulic press. [1913 Webster]
Ram's horn. (a) (Fort.) A low semicircular work situated in and commanding a ditch. [Written also ramshorn.] --Farrow. (b) (Paleon.) An ammonite. [1913 Webster]