![letter-box noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com letter-box noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com](https://www.oxfordlearnersdictionaries.com/media/english/fullsize/p/pos/postb/postbox_frontdoor_mailbox.png)
letter-box noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com
![box_1 noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com box_1 noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com](https://www.oxfordlearnersdictionaries.com/media/american_english/fullsize/p/pac/packa/packaging_1.jpg)
box_1 noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com
![What does Doc In A Box mean? - Definition of Doc In A Box - Doc In A Box stands for a small clinic/health centre, with ever-changing staff.. By AcronymsAndSlang.com What does Doc In A Box mean? - Definition of Doc In A Box - Doc In A Box stands for a small clinic/health centre, with ever-changing staff.. By AcronymsAndSlang.com](http://acronymsandslang.com/acronym_image/2590/67ee34b1f6e32d7508da1a85113aac05.jpg)
What does Doc In A Box mean? - Definition of Doc In A Box - Doc In A Box stands for a small clinic/health centre, with ever-changing staff.. By AcronymsAndSlang.com
![What does black box. mean? - Definition of black box. - black box. stands for Contains all records of data transmissions including altitude, air speed, etc. Also known as the cockpit recorders What does black box. mean? - Definition of black box. - black box. stands for Contains all records of data transmissions including altitude, air speed, etc. Also known as the cockpit recorders](http://acronymsandslang.com/acronym_image/2573/364f9c31e12122c1c574cdc3b150e95f.jpg)