indicator lamp(n = noun.artifact) pilot lamp, pilot light - indicator consisting of a light to indicate whether power is on or a motor is in operation; Array
is a kind of indicator

absorption indicator, acid-base indicator, aladdin's lamp, arc lamp, argand lamp, blast lamp, carbon arc lamp, carcel lamp, davy lamp, discharge lamp, electric lamp, electric-discharge lamp, flash lamp, flight indicator, flood lamp, floor lamp, fluorescent lamp, fresnel lamp, fuel indicator, gas lamp, gas-discharge lamp, glow lamp, heat lamp, hurricane lamp, incandescent lamp, indicator, infrared lamp, kerosene lamp, kerosine lamp, lady with the lamp, lamp, lamp chimney, lamp house, lamp housing, lamp oil, lamp shade, lamp shell, leading indicator, mercury-vapor lamp, neon induction lamp, neon lamp, oil lamp, oxidation-reduction indicator, pilot lamp, quartz lamp, reading lamp, rear lamp, riding lamp, safety lamp, sodium-vapor lamp, sodium-vapour lamp, speed indicator, spirit lamp, storm lamp, street lamp, student lamp, sun lamp, sun-ray lamp, sunray lamp, table lamp, tail lamp, torsion indicator, tungsten lamp, turn indicator, ultraviolet lamp