flank.er
n.(名词)One that flanks, especially a soldier so positioned as to protect the flank of a column of troops on the march.侧卫:尤指在行军中为掩护或保卫纵队侧翼而设置的士兵Business An extension product, such as a diet version of a soft drink or a liquid version of a detergent, added to a line to support the sales of the main product.【贸易】 名牌辅助产品,系列新产品:一种延伸产品,如某种软饮料的保健型或某种洗涤剂的液体型,这种产品附加到一系列产品中以促进主要产品销售Football A flankerback.【橄榄球】 侧面堡垒