Computer Science A set of precompiled routines for use in writing new programs.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "toolbox" in a sentence
"When the only tool in your toolbox is a hammer every problem starts to look like a nail."
"And you have to have basically what I call a toolbox, not tricks necessarily, but just things that you can do to diffuse situations."
"Your attempts to pin this type of tragedy on “left-wing extremism” only shows us that your toolbox is empty."