coil Definition

turmoil

trouble; also : everyday cares and worries

to wind into rings or spirals

to roll or twist into a shape resembling a coil

to move in a circular or spiral course

a series of loops

spiral

a single loop of such a coil

reactor

an apparatus for obtaining intermittent high voltage that consists of a primary coil through which the direct current flows, an interrupter, and a secondary coil of a larger number of turns in which the high voltage is induced

an air-core transformer for high-frequency alternating or oscillating electrical currents

something that stands first in rank, importance, or value : fundamental —usually used in plural

the celestial body around which one or more other celestial bodies revolve; especially : the more massive usually brighter component of a binary star system

one of the usually 9 or 10 strong flight feathers on the distal joint of a bird's wing

one occupying a subordinate or auxiliary position rather than that of a principal

a defensive football backfield

the coil through which the secondary current passes in an induction coil or transformer —called also secondary coil