guard noun
1 person who guards sb/sth
ADJ. armed, uniformed The building is protected by armed guards. | border, prison, security
VERB + GUARD post Guards had been posted all around the radio station.
GUARD + VERB patrol sth Guards patrolled the perimeter fence. | protect sth
GUARD + NOUN duty | dog
2 being ready to prevent attack or danger
ADJ. close | constant | armed The accused was taken to court under armed guard. | police
VERB + GUARD keep, mount, stand Soldiers stood guard on the city gates.
PREP. off your ~ The question seemed to catch him off his guard. | on (your) ~ Several police officers were on guard outside the factory. He was always on his guard against moneymaking schemes. | under ~ The prisoners were under close guard. | ~ against, ~ over Two police officers kept guard over the burnt-out building.
3 group of soldiers/policemen who guard sb/sth
ADJ. civil, national, palace, presidential | advance
VERB + GUARD change The guard was changed every two hours. | call out It would only be a matter of minutes before the alarm was raised and the guard called out.
PHRASES guard of honour Fellow soldiers from Corporal Smith's regiment formed a guard of honour at his wedding.
guard verb
ADV. well The mountain pass is well guarded. | carefully a bird carefully guarding its eggs | fiercely, jealously She jealously guarded her position of power.
PREP. against guarding the city against attack | from pop stars who need to be guarded from their fans
PHRASES closely/heavily/securely guarded The military base is closely guarded. | guard sb/sth with your life He was under instructions to guard the key with his life. | strictly/tightly guarded strictly guarded privacy
You can also check other dicts: guard (English, 中文解释 ), wordnet sense, Collins Definition