Translingual Symbol ⌊ ⌋ (mathematics) Indicates the use of floor function, rounds down a number to the nearest integer. ⌊3.14⌋ = 3 ⌊−4.28⌋ = −5 Antonyms ⌈ ⌉ (ceiling function)Wikiwand - on Seamless Wikipedia browsing. On steroids.