Term: tract: a system of body parts that together serve some particular purpose
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: pennyroyal: erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: instigator: a person who initiates a course of action
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: cetraria: foliose lichens chiefly of northern latitudes
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: half-pay: reduced wage paid to someone who is not working full time
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: metabolic disorder: a disorder or defect of metabolism
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: wood hoopoe: tropical African bird having metallic blackish plumage but no crest
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: priority: preceding in time
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: amyl nitrate: a vasodilator that is sometimes used to treat angina pectoris
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: godliness: piety by virtue of being a godly person
Broader: system: a group of physiologically or anatomically related organs or parts | Unrelated: open-face sandwich: sandwich without a covering slice of bread