The act of installing; installation. / (obsolete) The seat in which one is placed.

One who instructs; a teacher.

(Australia, Britain, Canada) Alternative spelling of installment

to establish as a normal practice / to commit a person to confinement in an institution

An organization (typically a non-profit think tank) that conducts original research on issues, makes governmental policy recommendations based on its findings, and disseminates its work to the appropriate audiences.

(anatomy) The arched part of the top of the foot between the toes and the ankle. / A section of any footwear covering that part of the foot. / In horses, the hind leg from the ham to the pastern joint.

To cause a quality to become part of someone's nature. / To pour in (medicine, for example) drop by drop.

(US) The generic term for the principal instructor of fresh military recruits undergoing basic training in the various branches of the United States military, routinely abbreviated to the initialism DI; always filled by enlisted personnel (a sergeant or petty officer).

(sociology) herding instinct.

(sociology) A social tendency in humans to identify with and model many behaviors and beliefs after a larger group of individuals with whom they identify.