Learn English – Etymology of sh*tfaced

It means (according to my trusty New Webster's Encyclopedic Dictionary):

1. to make full or complete again
2. to supply with fresh fuel
3. to fill again or anew
4. (intransitively) to become full or complete again

According to another dictionary (the one built-in in Mac OS X), the origin of the word can be traced to Old French (and further to Latin, of course), as follows:

ORIGIN late Middle English (in the sense [supply abundantly] ): from Old French repleniss-, lengthened stem of replenir, from re- ‘again’ (also expressing intensive force) + plenir ‘fill’ (from Latin plenus ‘full’ ).

Based on that, I don't think it has had other meanings in English earlier. As to why should one use this word instead of the less fancy refill – I have no idea, except perhaps to show off & try to sound educated.

Etymonline says:

c.1200, "bountiful, inclined to give or spend freely," also, of areas, "great in expanse," from O.Fr. large "broad, wide; generous, bounteous," ... An older sense of "liberated, free from restraining influence" is preserved in at large (late 14c.)

Wiktionary references the Old French au large ("at liberty", now means off in the sense of offshore/off the coast or abroad) in the Etymology section of its at large entry. I checked Google books, and in one commentary on Paradise Lost, at large is discussed:

The old meaning of large (liberated) may be found, then, to be preserved in at large as well as in the French.