There are four varieties of commercially viable coffee: Arabica, Liberica, Excelsa, and Robusta. Growers predominantly plant the Arabica species. Although less popular, Robusta tastes slightly more bitter and contains more caffeine.
PEDRAIL
Noun
pedrail (plural pedrails)
A device intended to replace the wheel of a self-propelled vehicle, allowing traversal of rough roads and the ability to climb over obstacles. The tread consists of a number of rubber-shod feet connected by ball-and-socket joints to the ends of sliding spokes attached to rollers and springs.
A vehicle, such as a traction engine, fitted with these devices.
Anagrams
• lip-read, lipread, predial, prelaid
Source: Wiktionary
Ped"rail`, n. [See Pedi-; Rail.] (Mach.) (a) A device intended to replace the wheel of a self-propelled vehicle for use on rough roads and to approximate to the smoothness in running of a wheel on a metal track. The tread consists of a number of rubber shod feet which are connected by ball-and-socket joints to the ends of sliding spokes. Each spoke has attached to it a small roller which in its turn runs under a short pivoted rail controlled by a powerful set of springs. This arrangement permits the feet to accomodate themselves to obstacles even such as steps or stairs. The pedrail was invented by one B. J. Diplock of London, Eng. (b) A vehicle, as a traction engine, having such pedrails.
Source: Webster’s Unabridged Dictionary 1913 Edition
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