/ˈjəgyələr/
Adjective
1. Relating to, or located near, the neck or throat. (wiktionary.org)
2. (Zoology, of fish) Having ventral fins attached under the throat (wiktionary.org); (of fish’s pelvic fins) Located in front of the pectoral fins (Google Dictionary).
3. The most vital part. (thefreedictionary.com)
Noun, pl.jugulars
1. Vein through the neck (or thorax) that returns blood from the head back towards the heart. Properly this is called the jugular vein. (wiktionary.org)
2. By extension, any critical vulnerability. (wiktionary.org)
3. One of the large veins which return the blood from the head to the heart through two chief trunks, an external and an internal, on each side of the neck; called also the jugular vein. (biology-online.org)
4. (Zoology) Any fish which has the ventral fins situated forward of the pectoral fins, or beneath the throat; one of a division of fishes (Jugulares). (biology-online.org)
Syn: Jugular vein
Word origin: From Modern Latin jugularis, from Latin iugulum “collarbone, throat, neck,” diminutive of iugum “yoke,” related to iungere “to join.”