1. An inborn pattern of behavior that is characteristic of a species and is often a response to specific environmental stimuli: the spawning instinct in salmon; altruistic instincts in social animals.
2. A powerful motivation or impulse.
3. An innate capability or aptitude: an instinct for tact and diplomacy.
1. Deeply filled or imbued: words instinct with love.
2. Obsolete. Impelled from within.
instinct
• Natural inward impulse; unconscious, involuntary, or unreasoning prompting to any mode of action, whether bodily, or mental, without a distinct apprehension of the end or object to be accomplished.
• An instinct is a propensity prior to experience, and independent of instructions. --Paley.
• An instinct is a blind tendency to some mode of action, independent of any consideration, on the part of the agent, of the end to which the action leads. --Whately.
An instinct is an agent which performs blindly and ignorantly a work of intelligence and knowledge. --Sir W. Hamilton.
• By a divine instinct, men's minds mistrust Ensuing dangers. --Shak.
• The natural, unreasoning, impulse by which an animal is guided to the performance of any action, without of improvement in the method.
• The resemblance between what originally was a habit, and an instinct becomes so close as not to be distinguished. --Darwin.
• A natural aptitude or knack; a predilection; as, an instinct for order; to be modest by instinct.

Aside from the well written definition above, it is also the males instinct to quickly cover ones gonads if in danger.

One of three Pokemon Go teams, up until now (08/10/2016) it has been the underdog and least popular, after Team Mystic and Team Valor. Team Instinct's color is yellow.

An innate sense or intrinsic understanding of a behavioral reaction

one's end having a need to be cleansed

To have an insatiable urge to hit the fuck out of your siblings.

Form that allows you to subconsciously dodge even the miniscule of things. Essentially, you're fully aware of your surroundings, like you have an eye with circumscopic (360) vision, as well as extremely advanced perception. It's timed though, so eventually you'll revert to your regular form and lose all the benefits.

When a woman wearing a skirt & no underwear briefly opens her legs so that her crotch is visible.

When a black person sees every move you're going to make before you even move.