adjective
[ only before noun ] used to describe an aircraft wing that can be moved forward for landing, etc. and backward for rapid flight
adjective
[ only before noun ] used to describe an aircraft wing that can be moved forward for landing, etc. and backward for rapid flight
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005