something (such as a leaf, skeleton, or footprint) that is from a plant or animal which lived in ancient times and that you can see in some rocks —sometimes used before another noun
a person whose ideas are very old-fashioned or out-of-date
a large group of soldiers organized to fight battles on land
the part of a country's military forces that includes soldiers who are trained to fight on land —usually capitalized when a specific army is being referred to —often used before another noun
a large number of people or things that are involved in some activity together
