a peg to hang something onBritish EnglishBrEREASON something that is used as a reason for doing, discussing, or believing something 做某事[相信某事]的理由[借口]；话题，谈资 As a peg to hang it on, the tournament had the 100th anniversary of Nehru’s birth. 本次锦标赛是为了纪念尼赫鲁百年诞辰。
→ a peg to hang something on at peg1(2)