Main Entry: pro·pel·ler
Variant(s): also pro·pel·lor \prə-ˈpe-lər\
Function: noun
Date: 1780
: one that propels; especially : a device that consists of a central hub with radiating blades placed and twisted so that each forms part of a helical surface and that is used to propel a vehicle (as a ship or airplane)
Main Entry: 1boss
Pronunciation: \ˈbäs, ˈbȯs\
Function: noun
Etymology: Middle English boce, from Anglo-French, from Vulgar Latin *bottia
Date: 14th century
1 a : a protuberant part or body b : a raised ornamentation : stud c : an ornamental projecting block used in architecture
2 : a soft pad used in ceramics and glassmaking
3 : the hub of a propeller
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