full (adj.)

Old English full "containing all that can be received; having eaten or drunk to repletion; filled; perfect, entire, utter," from Proto-Germanic *fullaz "full" (source also of Old Saxon full, Old Frisian ful, Dutch vol, Old High German fol, German voll, Old Norse fullr, Gothic fulls), from PIE root *pele- (1) "to fill." Related: Fuller; fullest.

The adverb is Old English ful "very, fully, entirely, completely" and was common in Middle English (full well, full many, etc.); sense of "quite, exactly, precisely" is from 1580s. Full moon, one with its whole disc illuminated, was Old English fulles monan; first record of full-blood in reference to racial purity is from 1812. Full house is 1710 in the theatrical sense, 1887 in the poker sense (three of a kind and a pair, earlier full-hand, 1850). Full-dress (adj.) "appropriate to a formal occasion" is from 1761, from the noun phrase.

full (v.)

"to tread or beat cloth to cleanse or thicken it," late 14c., from Old French foler, fouler "trample on, press," from Latin fullo "fuller, launderer," also a kind of beetle, a word of unknown etymology. Perhaps the Middle English word was from Old English agent-noun fullere, which probably was formed from Latin fullo with a native ending.

full (n.)

early 14c., from Old English fyllo, fyllu "fullness (of food), satiety;" also from full (adj.).

Definitions of full
full (adj.)
filled to satisfaction with food or drink;
a full stomach
Synonyms: replete
full (adj.)
being at a peak or culminating point;
full summer
Synonyms: broad
full (adj.)
containing as much or as many as is possible or normal;
a full glass
the auditorium was full to overflowing
a sky full of stars
a full life
full (adj.)
constituting the full quantity or extent; complete;
gave full attention
Synonyms: entire / total
full (adj.)
complete in extent or degree and in every particular;
a full game
Synonyms: total
full (adj.)
(of sound) having marked deepness and body;
a full voice
full tones
full (adj.)
having the normally expected amount;
gives full measure
Synonyms: good
full (adj.)
having ample fabric;
a full skirt
Synonyms: wide / wide-cut
full (v.)
beat for the purpose of cleaning and thickening;
full the cloth
full (v.)
make (a garment) fuller by pleating or gathering;
full (v.)
increase in phase;
Synonyms: wax
full (n.)
the time when the Moon is fully illuminated;
the moon is at the full
Synonyms: full moon / full-of-the-moon / full phase of the moon
full (adv.)
to the greatest degree or extent; completely or entirely; (`full' in this sense is used as a combining form);
knew full well
Synonyms: fully / to the full