Easier English Basic Dictionary

The Easier English? Basic Dictionary is designed especially for
elementary and pre-intermediate students of English. With over 11,000
terms, it includes the basic vocabulary needed to understand and study
written and spoken English at this level, and is particularly useful for
students taking the Preliminary English Test (PET) or the Key English
Test (KET) exams.
With definitions written in simple English, clear notes on grammar,
irregular verbs and easily confused words, as well as pronunciations for
all entries, this is an invaluable aid to students of English.