Term: operator: an agent that operates some apparatus or machine
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: dieffenbachia: evergreen perennial herbs of tropical America with lush foliage and poisonous sap; often cultivated as houseplants
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: scatology: a preoccupation with obscenity (especially that dealing with excrement or excretory functions)
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: check-in: the act of reporting your presence (as at an airport or a hotel)
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: cerebral thrombosis: a blood clot in a cerebral artery or vein
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: plantaginaceae: cosmopolitan family of small herbs and a few shrubs; most are troublesome weeds
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: rhine wine: any of several white wines from the Rhine River valley in Germany (`hock' is British usage)
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: default: loss due to not showing up
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: comma bacillus: comma-shaped bacteria that cause Asiatic cholera
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: aeolian: a member of one of four linguistic divisions of the prehistoric Greeks
Broader: causal agent: any entity that produces an effect or is responsible for events or results | Unrelated: attestation: the action of bearing witness