n.
Pronunciation: ' bäs, ' bo ̇ s
Function: noun
Etymology: Middle English boce, from Anglo-French, from Vulgar Latin *bottia
Date: 14th century
1 a : a protuberant part or body <a boss of granite> <a boss on an animal's horn> 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
boss 1c