(informal, uncountable, usually) Miscellaneous items or objects; (with possessive) personal effects.
(informal, obsolete, uncountable, usually) Miscellaneous items or objects; (with possessive) personal effects.
(informal, uncountable, usually) Unspecified things or matters.
(uncountable, usually) The tangible substance that goes into the makeup of a physical object.
(archaic, uncountable, usually) The tangible substance that goes into the makeup of a physical object.
(archaic, uncountable, usually) The tangible substance that goes into the makeup of a physical object.
(uncountable, usually) The tangible substance that goes into the makeup of a physical object.
(uncountable, usually) The tangible substance that goes into the makeup of a physical object.
(informal, uncountable, usually) Used as placeholder, usually for material of unknown type or name.
(slang, uncountable, usually) Narcotic drugs, especially heroin.
(obsolete, uncountable, usually) A medicine or mixture; a potion.
(euphemistic, sometimes, uncountable, usually) Refuse or worthless matter; hence, also, foolish or irrational language.
(uncountable, usually) A melted mass of turpentine, tallow, etc., with which the masts, sides, and bottom of a ship are smeared for lubrication.
(dated, slang, uncountable, usually) Money.

(transitive) To fill by packing or crowding something into; to cram with something; to load to excess.
(transitive) To fill a space with (something) in a compressed manner.
(transitive) To fill with seasoning.
(transitive) To load goods into (a container) for transport.
(transitive) To sate.
(pronominal) To eat, especially in a hearty or greedy manner.
(Australia, British, New-Zealand, transitive) To break; to destroy.
(Australia, British, New-Zealand, transitive, vulgar) To sexually penetrate.
(imperative, mildly, often, transitive, vulgar) Used to contemptuously dismiss or reject something. See also stuff it.
(informal) To heavily defeat or get the better of.
(transitive) To cut off another competitor in a race by disturbing his projected and committed racing line (trajectory) by an abrupt manoeuvre.
To preserve a dead bird or other animal by filling its skin.
(transitive) To obstruct, as any of the organs; to affect with some obstruction in the organs of sense or respiration.
(transitive) To form or fashion by packing with the necessary material.
(dated, transitive) To crowd with facts; to cram the mind of; sometimes, to crowd or fill with false or idle tales or fancies.
(transitive) To compress (a file or files) in the StuffIt format, to be unstuffed later.