plaid /plæd/ BrE AmE noun
[ Date: 1500-1600 ; Language: Scottish Gaelic ; Origin: plaide ]
1 . [uncountable] a pattern of crossed lines and squares, used especially on cloth SYN tartan British English :
a plaid shirt
2 . [countable] a piece of plaid cloth worn over the shoulder and across the chest by people from Scotland as part of their ↑ national costume