Definition of "Habit" :
noun: (psychology) an automatic pattern of behavior in reaction to a specific situation; may be inherited or acquired through frequent repetition
"Owls have nocturnal habits."
noun: excessive use of drugs
noun: a distinctive attire worn by a member of a religious order
noun: attire that is typically worn by a horseback rider (especially a woman's attire)
noun: an established custom
"It was their habit to dine at 7 every evening."
noun: the general form or mode of growth (especially of a plant or crystal)
"A shrub of spreading habit."
verb: put a habit on