1. 1. A recurrent, often unconscious pattern of behavior that is acquired through frequent repetition.
   2. An established disposition of the mind or character.
   3. A distinctive dress or costume, especially of a religious order.
   4. A riding habit.
2. Customary manner or practice: a person of ascetic habits.
3. An addiction, especially to a narcotic drug.
4. Physical constitution.
5. Characteristic appearance, form, or manner of growth, especially of a plant or crystal.
6. 1. A distinctive dress or costume, especially of a religious order.
   2. A riding habit.

Synonyms: These nouns denote patterns of behavior established by continual repetition. Habit applies to a behavior or practice so ingrained that it is often done without conscious thought: "Habit rules the unreflecting herd" (William Wordsworth).
Practice denotes an often chosen pattern of individual or group behavior: "You will find it a very good practice always to verify your references, sir" (Martin Joseph Routh).
Custom is behavior as established by long practice and especially by accepted conventions: "No written law has ever been more binding than unwritten custom supported by popular opinion" (Carrie Chapman Catt).
Usage refers to an accepted standard for a group that regulates individual behavior: "laws ... corrected, altered, and amended by acts of parliament and common usage" (William Blackstone).
Use and wont are terms for customary and distinctive practice: "situations where the use and wont of their fathers no longer meet their necessities" (J.A. Froude).
Habitude refers to an individual's behaving in a certain way rather than a specific act: "His real habitude gave life and grace/To appertainings and to ornament" (Shakespeare).

1. The characteristic shape of a crystal, such as the cubic habit that is characteristic of pyrite.
2. The characteristic manner of growth of a plant. For example, grape plants and ivy display a vining habit.