n 盾(broad piece of metal，wood，etc carried to protect oneself against weapons)[C]：The sword glanced off the knight's～. 宝剑擦过骑士的盾牌。His～saved him from being killed by his enemy's lance. 他的盾牌挡住了敌人的长矛，得以保住他的性命。

(2)盾形纹徽(emblem or badge shaped like a warrior's shield)[C]：The policeman flashed his～. 警察晃了一下他的徽章。〖同〗emblem，badge;button，star;

(3)盾形徽标(object shaped like a shield presented as a prize in a sporting competition，etc)[C]：My son has won the boxing/John Swith Junior Archery S～.我的儿子获得了拳击/约翰·史密斯少年射箭比赛的盾形奖牌。

(4)防护物，庇护者(sth or sb giving，or used for protection)[C][N (against)]：The polish is an effective～against rust.这种上光蜡能有效地防止生锈。 The terrorists prevented the police from shooting at them by using some of their prisoners as～s. 恐怖分子用囚犯作人墙挡住警察向他们射来的子弹。〖同〗 protection，protector;

(5)屏，障，挡板(thing like a shield fixed to a machine，etc and used as protection against danger，eg from moving parts of the machine)[C]：a welder's eye-～电焊工的护目罩;a heat/wind～隔热屏/风障;〖同〗guard，cover，screen;

v 保(庇)护(protect from sth harmful，etc)[T+n，T+n+prep (against/from)]：～one's eyes with one's hands 用手蔽护眼睛;She lied to the police to～her friend. 她向警方说谎以包庇自己的朋友。The motor is～ed in a shockproof housing. 发动机封装在防震壳中。～sb from radiation/injury/punishment/the sun 使某人免受辐射/伤害/惩罚/日晒;〖同〗protect，guard，shade，cover;〖反〗expose，uncover，endanger，risk