something that arouses one's interest or excitement.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
British Dictionary definitions for turn on
(tr, adverb) to cause (something) to operate by turning a knob, etc: to turn on the light
(intr, preposition) to depend or hinge on: the success of the party turns on you
(preposition) to change or cause to change one's attitude so as to become hostile or to retaliate: the dog turned on the children
(tr, adverb) informal to produce (charm, tears, etc) suddenly or automatically
(tr, preposition, foll by to) informal to interest (someone) in something: how to turn kids on to drama
(tr, adverb) slang to arouse emotionally or sexually
(intr, adverb) slang to take or become intoxicated by drugs
(tr, adverb) slang to introduce (someone) to drugs
slang a person or thing that causes emotional or sexual arousal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Other Idioms and Phrases with turnon
Cause to begin the operation, flow, or activity of, as in Turn on the lights, please, or Don't turn on the sprinkler yet. [First half of 1800s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.