"noose for catching animals," late Old English snearu, and also from a Scandinavian source such as Old Norse snara "noose, snare," related to soenri "twisted rope," from Proto-Germanic *snarkho (source also of Middle Dutch snare, Dutch snaar, Old High German snare, German Schnur "noose, cord," Old English snear "a string, cord"). Figuratively from c. 1300, "anything by which one is entangled or entrapped."

type of bulbous flowering plant, 1540s, from Latin narcissus, from Greek narkissos, a plant name, not the modern narcissus, possibly a type of iris or lily, associated with Greek narkē "numbness" (see narcotic (n.)) because of the sedative effect of the alkaloids in the plant, but Beekes considers this folk-etymology and writes that "The suffix clearly points to a Pre-Greek word."

word-forming element meaning "stupor, narcosis, sleep," also "of or pertaining to narcotic drugs," from Latinized form of Greek narko-, combining form of narke "numbness" (see narcotic (n.)).

"condition characterized by a tendency to fall into a short sleep on any occasion," 1880, from French narcolepsie, coined 1880 by French physician Jean-Baptiste-Édouard Gélineau (1859-1928) from Latinized combining form of Greek narkē "numbness, stupor" (see narcotic (n.)) + -lepsie (as in epilepsy), from Greek lepsis "an attack, seizure," from leps-, future stem of lambanein "take, take hold of, grasp" (see lemma). Related: Narcoleptic; narcolept.

1690s, "state of unconsciousness caused by a narcotic," Modern Latin, from Greek narkōsis, from narkoun "to benumb" (see narcotic (n.)).