download (v.)

"in a descending direction, from a higher to a lower place, degree, or condition," late Old English shortened form of Old English ofdune "downwards," originally of dune "off from (the) hill," from dune "from the hill," dative of dun "hill" (see down (n.2)). The "hill" word is general in Germanic, but this sense development is peculiar to English. As a preposition, "in a descending direction upon or along,"  from late 14c.

To be down on "express disapproval of" is by 1851. Down home is from 1828 as "in one's home region," as an adjective phrase meaning "unpretentious" by 1931, American English. Down the hatch as a toast is from 1931. Down to the wire is 1901, from horse-racing.

Down Under "Australia and New Zealand" attested from 1886; Down East "Maine" is from 1825; Down South "in the Southern states of the U.S." is attested by 1834. Down the road "in the future" is by 1964, U.S. colloquial. Down-to-earth "everyday, ordinary, realistic" is by 1932.

late 15c., "to place in or on (a vehicle)," from load (n.). Sense of "add to the weight of, put a load in or on" is from c. 1500; sense of "to charge a firearm" is from 1620s. Intransitive sense "put or take on a load or charge" is from 1720; of a vehicle, "to fill with passengers," from 1832. Of computer files or programs, by 1977. Related: Loaded; loaden (the old strong past participle, persisting till 18c. in poetry but now obsolete); loading.