tear (n.1)

"fluid drop from the eye," Old English tear "tear, drop, nectar, what is distilled in drops," from earlier teahor, tæhher, from Proto-Germanic *tahr-, *tagr- (source also of Old Norse, Old Frisian tar, Old High German zahar, German Zähre, Gothic tagr "tear"), from PIE *dakru- (source also of Latin lacrima, Old Latin dacrima, Irish der, Welsh deigr, Greek dakryma). To be in tears "weeping" is from 1550s. Tear gas first recorded 1917.

tear (v.1)

"pull apart," Old English teran "to tear, lacerate" (class IV strong verb; past tense tær, past participle toren), from Proto-Germanic *teran (source also of Old Saxon terian, Middle Dutch teren "to consume," Old High German zeran "to destroy," German zehren, Gothic ga-tairan "to tear, destroy"), from PIE root *der- "to split, flay, peel."

The Old English past tense survived long enough to get into Bible translations as tare before giving place 17c. to tore, which is from the old past participle toren. Sense of "to pull by force" (away from some situation or attachment) is attested from late 13c. To be torn between two things (desires, loyalties, etc.) is from 1871.

tear (v.2)

early 15c., "shed tears," 1650s, "fill with tears" mainly in American English, from tear (n.1). Related: Teared; tearing. Old English verb tæherian, tearian "to weep" did not survive into Middle English.

tear (n.2)

"act of ripping or rending," 1660s, from tear (v.1). Old English had ter (n.) "tearing, laceration, thing torn."

Definitions of tear
tear (v.)
separate or cause to separate abruptly;
tear the paper
Synonyms: rupture / snap / bust
tear (v.)
to separate or be separated by force;
planks were in danger of being torn from the crossbars
tear (v.)
move quickly and violently;
The car tore down the street
Synonyms: shoot / shoot down / charge / buck
tear (v.)
strip of feathers;
Synonyms: pluck / pull / deplume / deplumate / displume
tear (v.)
fill with tears or shed tears;
Her eyes were tearing
tear (n.)
a drop of the clear salty saline solution secreted by the lacrimal glands;
his story brought tears to her eyes
Synonyms: teardrop
tear (n.)
an opening made forcibly as by pulling apart;
Synonyms: rip / rent / snag / split
tear (n.)
an occasion for excessive eating or drinking;
Synonyms: bust / binge / bout
tear (n.)
the act of tearing;
he took the manuscript in both hands and gave it a mighty tear