What is Stipend?

Legal Definition
A stipend is a form of salary, such as for an internship or apprenticeship. It is often distinct from a wage or a salary because it does not necessarily represent payment for work performed; instead it represents a payment that enables somebody to be exempt partly or wholly from waged or salaried employment in order to undertake a role that is normally unpaid (e.g. a magistrate in the United Kingdom) or voluntary, or which cannot be measured in terms of a task (e.g. members of the clergy).

Stipends are usually lower than what would be expected as a permanent salary for similar work. This is because the stipend is complemented by other benefits such as accreditation, instruction, food, and/or accommodation. Some University Graduate schools make stipend payments to help students have the time and funds to earn their academic degree (i.e. master's and doctoral degrees). Universities usually refer to money paid to graduate students as a stipend, rather than as wages, to reflect complementary benefits. Some schools give stipend for any degree. Stipendiary is to receive a stipend.
-- Wikipedia
Legal Definition
A salary; settled pay. Man-gam v. Brooklyn, 98 N. Y. 507, 50 Am. Rep. 705. In English and Scotch law. A provision made for the support of the clergy.
-- Black's Law Dictionary
Legal Definition
Same as Salary.
-- Ballentine's Law Dictionary