Definition of handle noun from the Oxford Advanced Learner's Dictionary

handle

noun

ˈhændl

ˈhændl

of door/drawer/window

1 the part of a door, drawer, window, etc. that you use to open itShe turned the handle and opened the door.

of cup/bag/tool

2 the part of an object, such as a cup, a bag, or a tool that you use to hold it, or carry itthe handle of a knifea broom handleThe handle's broken off this jug. see also love handles

-handled

3 (in adjectives) having the number or type of handle mentioneda long-handled spoon

Idioms

get/have a handle on somebody/something

(informal) to understand or know about somebody/something, especially so that you can deal with it or them laterI can't get a handle on these sales figures.

give somebody a handle (on something)

(informal) to give somebody enough facts or knowledge for them to be able to deal with somethingVisiting the country should give us a better handle on understanding the problems.

more at fly off the handle at fly verb