spit (v.1)

"expel saliva," Old English spittan (Anglian), spætan (West Saxon), transitive and intransitive, past tense *spytte, from Proto-Germanic *spitjan, from PIE *sp(y)eu-, of imitative origin (see spew (v.)). Not the usual Old English word for this; spætlan (see spittle) and spiwan are more common; all are from the same root. To spit as a gesture of contempt (especially at someone) is in Old English. Related: Spat; spitting.

spit (n.1)

"saliva," early 14c., from spit (v.1). Meaning "the very likeness" in modern use is attested from 1825 (as in spitting image, attested from 1887); compare French craché in same sense. Spit-curl (1831) was originally considered colloquial or vulgar. Military phrase spit and polish first recorded 1895.

spit (n.2)

"sharp-pointed rod for roasting meat," late Old English spitu "a spit," from Proto-Germanic *spituz (source also of Middle Dutch and Dutch spit, Swedish spett (which perhaps is from Low German), Old High German spiz, German Spieß "roasting spit," German spitz "pointed"), from PIE *spei- "sharp point" (see spike (n.1)). This is also the source of the word meaning "sandy point" (1670s). Old French espois, Spanish espeto "spit" are Germanic loan-words. The verb meaning "to put on a spit" is recorded from c. 1200.

spit (v.2)

c. 1200, "put on a spit, thrust with a spit," from late Old English sputtian "to spit" (for cooking), from spit (n.2). Meaning "pierce with a weapon, transfix, impale" is from early 15c. Related: Spitted; spitting. Nares' Glossary has spit-frog "a small sword."

Definitions of spit
spit (v.)
expel or eject (saliva or phlegm or sputum) from the mouth;
The father of the victim spat at the alleged murderer
Synonyms: ptyalize / ptyalise / spew / spue
spit (v.)
utter with anger or contempt;
Synonyms: spit out
spit (v.)
rain gently;
spit (v.)
drive a skewer through;
Synonyms: skewer
spit (n.)
a narrow strip of land that juts out into the sea;
Synonyms: tongue
spit (n.)
a clear liquid secreted into the mouth by the salivary glands and mucous glands of the mouth; moistens the mouth and starts the digestion of starches;
Synonyms: saliva / spittle
spit (n.)
a skewer for holding meat over a fire;
spit (n.)
the act of spitting (forcefully expelling saliva);
Synonyms: spitting / expectoration