Term: retrorocket: a small rocket engine on a larger rocket or spacecraft that is fired to slow or alter its course
Candidate hypernym: machine: any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks → 1
Candidate hypernym: roughcast: a coarse plaster for the surface of external walls → 0
Candidate hypernym: nepenthaceae: coextensive with the genus Nepenthes → 0
Candidate hypernym: stifle: joint between the femur and tibia in a quadruped; corresponds to the human knee → 0
Candidate hypernym: sonchus: sow thistles → 0
Candidate hypernym: polyvinyl-formaldehyde: a polymer of vinyl formaldehyde → 0
Candidate hypernym: boston baked beans: dried navy beans baked slowly with molasses and salt pork → 0
Candidate hypernym: flycatching warbler: any of numerous American wood warblers that feed on insects caught on the wing → 0
Candidate hypernym: projection: the projection of an image from a film onto a screen → 0
Candidate hypernym: chamber music: serious music performed by a small group of musicians → 0
Candidate hypernym: twenty-twenty: normal visual acuity, as measured by the ability to read charts at a distance of 20 feet → 0