ring binder
Word family adjectiveringedringlessringletednounringerringetteringingringletringsterring binderringbitringboltringboneringdovering fingerringleaderringmanringmasterring roadringsideringsiderringstandringtailringwayringworkringwormringtoneringadverbringwiseringingly
ˈring ˌbinder noun [countableC] British EnglishBrE 
a file for holding papers, in which metal rings go through the edges of the pages, holding them in place 活页夹，活页簿 →5 see picture at 见图 stationery
a file for holding papers, in which metal rings go through the edges of the pages, holding them in place 活页夹，活页簿 →5 see picture at 见图 stationeryExamples from the Corpus
ring binder• It is presented in an A4 ring binder and each section is well indexed.• At other levels materials will fit into a larger format ring binder, possibly Deskfax.• At the Survival level, packs of loose-leaf materials will be available to fit into a Filofax/Organiser ring binder.