march aggressively into another's territory by military force for the purposes of conquest and occupation; "Hitler invaded Poland on September 1, 1939"
penetrate or assault, in a harmful or injurious way; "The cancer had invaded her lungs"
occupy in large numbers or live on a host; "the Kudzu plant infests much of the South and is spreading to the North"
the act of folding; "he gave the napkins a double fold"
a pen for sheep
a folded part (as in skin or muscle)
a geological process that causes a bend in a stratum of rock
an angular or rounded shape made by folding; "a fold in the napkin"; "a crease in his trousers"; "a plication on her blouse"; "a flexure of the colon"; "a bend of his elbow"
incorporate a food ingredient into a mixture by repeatedly turning it over without stirring or beating; "Fold the egg whites into the batter"
become folded or folded up; "The bed folds in a jiffy"
bend or lay so that one part covers the other; "fold up the newspaper"; "turn up your collar"