Meaning of ins and outs

ins' and outs'

Pronunciation: [key]
  1. physical characteristics, as windings and turnings, nooks, or recesses: the ins and outs of a subterranean passage.
  2. intricacies; particulars; peculiarities: the ins and outs of the tax laws.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.