Term: optical device: a device for producing or controlling light
Broader: device: an instrumentality invented for a particular purpose | Unrelated: doctor: children take the roles of physician or patient or nurse and pretend they are at the physician's office
Broader: device: an instrumentality invented for a particular purpose | Unrelated: tape: a recording made on magnetic tape
Broader: device: an instrumentality invented for a particular purpose | Unrelated: clasp: the act of grasping
Broader: device: an instrumentality invented for a particular purpose | Unrelated: trudge: a long difficult walk
Broader: device: an instrumentality invented for a particular purpose | Unrelated: banana bread: moist bread containing banana pulp
Broader: device: an instrumentality invented for a particular purpose | Unrelated: photometry: measurement of the properties of light (especially luminous intensity)
Broader: device: an instrumentality invented for a particular purpose | Unrelated: incontrovertibility: the quality of being undeniable and not worth arguing about
Broader: device: an instrumentality invented for a particular purpose | Unrelated: wood meadowgrass: slender European grass of shady places; grown also in northeastern America and temperate Asia
Broader: device: an instrumentality invented for a particular purpose | Unrelated: pamperer: someone who pampers or spoils by excessive indulgence
Broader: device: an instrumentality invented for a particular purpose | Unrelated: incineration: the act of burning something completely; reducing it to ashes