/ɪˈrekʃn/ N-COUNT If a man has an erection, his penis is stiff, swollen, and sticking up because he is sexually aroused. (阴茎的) 勃起 N-UNCOUNT The erection of something is the act of building it or placing it in an upright position. 建造; 竖立; …the erection of temporary fencing to protect hedges;