This glossary gives many succinct, cross-referenced definitions as well as a bibliography, picture gallery and a few notes on the origin of terms. Some references are linked to journal articles in the JSTOR archive.
Glossaries of Economic Terms in Development Economics
Published by Ralph Nader's nonprofit consumer-rights organisation, Public Citizen, this is the PDF version of a booklet dating from 1996. In 18 pages, it explains acronyms and basic concepts related to Free Trade Agreements, and gives advice on reading and interpreting trade agreement documents.
This glossary accompanies a site which introduces development economics issues in the context of a "Virtual" Zambia. The definitions here are mostly of economic terms, with some related political and historical terms. Each is given a short definition. The original site is no longer running, so this link is to Archive.org's copy.
Part of the "2015: Where will we be?" portal, this glossary gives short definitions to dozens of terms related to development.