Sabre

A Sabre is a type of sword with a single edge blade with a large hand guard. Its blade is usually (but not always) curved of variable length. Its origins are unclear but it was first seen during the 10th century in Europe. Often they were a symbol of miliatary rank, favoured by calvary later on. Until World War 1 it was commonly used. The sabre also posed in ceremonial from 1930 onwards until most countries began to discontinue the use of calavary.

The sabre is a common sword seen in typical Pirate and Sea adventure based films and other media. However the Cutlass is more commonly preferred when references such things.

One Piece
Sabres are often seen being used by background characters. The most notable use of one is by Shanks who seems to favour them over other sword types.