luns

Etymology
From.

Noun

 * 1) linchpin
 * 2) any pin inserted into an opening to keep an object in place

Etymology
, from, variant of.

Noun

 * 1) Monday
 * 2) * 1434, A. Rodríguez González & J. Armas Castro (eds.), Minutario notarial de Pontevedra (1433-1435). Santiago de Compostela: Consello da Cultura Galega, page 156:
 * Dia luns, quinse dias do dito mes de novenbre
 * Monday, November 15

Noun

 * 1)  a clumsy (male) person