(transitive) To help keep from falling.
(transitive) To back or favor a cause, party, etc., mentally or with concrete aid
(transitive) To provide sustenance or maintenance for; to sustain in integrity or livelihood.
(transitive) To help, particularly financially; to subsidize.
(transitive) To provide evidence for; to lend credibility to.
(transitive) To serve, as in a customer-oriented position; to give support to.
(transitive) To assist or be involved with, but not be responsible for.
(transitive) To answer questions and resolve problems regarding something sold.
(transitive, usually) To be designed to provide capacity for; to work or be compatible with (a part, accessory, file type, program, algorithm, etc.).
(archaic, transitive) To endure without being overcome; bear; undergo; tolerate.
(transitive) To play a lesser part in the same production with (a star performer).

(attributive, countable, sometimes, uncountable) Something which supports.
(countable, uncountable) Financial or other help.
(countable, uncountable) Answers to questions and resolution of problems regarding something sold.
(countable, uncountable) in relation to a function, the set of points where the function is not zero; the closure of that set.
(countable, uncountable) A set whose elements are at least partially included in a given fuzzy set (i.e., whose grade of membership in that fuzzy set is strictly greater than zero).
(countable, uncountable) The set of all prime ideals of R such that the localization of M at the prime is nonzero, denoted operatorname SuppM
(countable, uncountable) Evidence.
(countable, uncountable) Compatibility and functionality for a given product or feature.
(countable, uncountable) An actor playing a subordinate part with a star.
(countable, uncountable) An accompaniment in music.
(abbreviation, alt-of, clipping, countable, uncountable) Clipping of support position.
(countable, uncountable) Horizontal, vertical or rotational support of structures: movable, hinged, fixed.