Definition of "roughly"

roughly

/ˈɹʌf.li/

adverb
comparative roughlier or more roughly, superlative roughliest or most roughly
1. In a rough manner; without kindness, softness, or gentleness.
  Quotations
  They treated the prisoners roughly [...] slashing pitilessly with their whips to drive them as wretched animals before them.
  1966, James Workman, The Mad Emperor, Melbourne, Sydney: Scripts, page 60
2. Unevenly or irregularly.
3. Without precision or exactness; imprecisely but close to in quantity or amount; approximately.
  Quotations
  Satanism can be divided, roughly, into two branches: the Luciferians and the Palladists.
  1936, Rollo Ahmed, The Black Art, London: Long, page 259
  Of the roughly 400 emerging infectious diseases that have been identified since 1940, more than 60% are zoonotic: ie they came from animals. Throughout history this has been common.
  2013 December 6, Alok Jha, “A deadly disease could travel at jet speed around the world. How do we stop it in time?”, in The Guardian Weekly, volume 189, number 26, page 27