box | meaning of box in Longman Dictionary of Contemporary English | LDOCE
letter box noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com
Box meaning | Box in a Sentence | Most common words in English | ☑ Check your English level https://englishforall.info/english-quizzes/ ☑ Box meaning: (n) a square or rectangular container with stiff sides