"noose for catching animals," late Old English, 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.
"string across a drum," 1680s, probably from Dutch snaar "string," from same source as snare (n.1). From 1938 as short for snare-drum (1873).
late 14c., "to ensnare," from snare (n.1). Related: Snared; snaring.