Great Britain, UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland, Britain, GB - a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland

U.S.A., United States, United States of America, US, USA, America, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776

linear unit - a unit of measurement of length

foot, ft - a linear unit of length equal to 12 inches or a third of a yard; "he is six feet tall"

ligne - a linear unit (1/40 inch) used to measure diameter of buttons

mesh - the number of opening per inch of a screen; measures size of particles; "a 100 mesh screen"; "100 mesh powdered cellulose"

mil - a unit of length equal to one thousandth of an inch; used to specify thickness (e.g., of sheets or wire)

pica, pica em, em - a linear unit (1/6 inch) used in printing

area unit, square measure - a system of units used to measure areas

advance, march on, move on, progress, pass on, go on - move forward, also in the metaphorical sense; "Time marches on"