goose grass n annual having the stem beset with curved prickles; North America and Europe and Asia n low-growing perennial having leaves silvery beneath; northern United States; Europe; Asia n annual weedy grass used for hay n coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere Synonym(s) cleavers clivers catchweed spring cleavers Galium aparine silverweed goose-tansy Potentilla anserina Texas millet Panicum Texanum yardgrass yard grass wire grass Eleusine indica