Term: time-ball: a ball that slides down a staff to show a fixed time; especially at an observatory
Candidate hypernym: ball: an object with a spherical shape → 1
Candidate hypernym: oil stain: a stain produced by oil → 0
Candidate hypernym: opsin: retinal protein formed by the action of light on rhodopsin → 0
Candidate hypernym: rhyniaceae: primitive plants of the Paleozoic → 0
Candidate hypernym: uranyl nitrate: a yellow salt obtained by the reaction of uranium salts with nitric acid → 0
Candidate hypernym: boletus pulverulentus: an edible fungus with a broadly convex blackish brown cap and a pore surface that is yellow when young and darkens with age; stalk is thick and enlarges toward the base → 0
Candidate hypernym: quark cheese: fresh unripened cheese of a smooth texture made from pasteurized milk, a starter, and rennet → 0
Candidate hypernym: pinstripe: a fabric with very thin stripes → 0
Candidate hypernym: nominating speech: an address (usually at a political convention) proposing the name of a candidate to run for election → 0
Candidate hypernym: fringe: one of the light or dark bands produced by the interference and diffraction of light → 0
Candidate hypernym: shuteye: informal term for sleep → 0