W: (n) Canada [Related to: metre] (a nation in northern North America; the French were the first Europeans to settle in mainland Canada) "the border between the United States and Canada is the longest unguarded border in the world"
W: (n) Britain [Related to: metre] (a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom)
S: (n) meter (any of various measuring instruments for measuring a quantity)