We found one dictionary that defines the word knock something back:

General (1 matching dictionary)

1. knock something back: Oxford Learner's Dictionaries

▸ Words similar to knock something back ▸ Usage examples for knock something back ▸ Idioms related to knock something back ▸ Wikipedia articles (New!) ▸ Words that often appear near knock something back ▸ Rhymes of knock something back ▸ Invented words related to knock something back