idle meaning
EN
[ˈaɪd(ə)l] [-aɪdəl] 
US WIdle
- Idle (idling) is a term which generally refers to a lack of motion and/or energy.
EN Idle 
- VerbSGidlesPRidlingPT, PPidled
- (transitive) To spend in idleness; to waste; to consume.
- (intransitive) To lose or spend time doing nothing, or without being employed in business.
- to idle in an IRC channel
- (intransitive) Of an engine: to run at a slow speed, or out of gear; to tick over.
- (transitive) To spend in idleness; to waste; to consume.
- AdjectiveCOMmore idleSUPmost idle
- (obsolete) Empty, vacant.
- Not turned to appropriate use; not occupied.
- idle hours; My computer hibernates after it has been idle for 30 minutes.
- Not engaged in any occupation or employment; unemployed; inactive; doing nothing.
- idle workmen
- Averse to work, labor or employment; lazy; slothful.
- an idle fellow
- Of no importance; useless; worthless; vain; trifling; thoughtless; silly.
- an idle story; idle talk; idle rumor
- (obsolete) Light-headed; foolish.
- (obsolete) Empty, vacant.
- More Examples
- Used in the Middle of Sentence
- Their warmth stirred her up to be so busy and laudably benevolent; perhaps if he had been away she might have been idle and slack-handed; but I do not know.
- Your computer hibernates after it has been idle for the specified amount of time. — Microsoft Corp, Use Hibernate and Standby to Conserve Batteries (2001)
- augh at your misery, as foredeeming you / An idle meteor. ― Webster.
- Used in the Middle of Sentence
Definition of idle in English Dictionary
- Part-of-Speech Hierarchy
- Adjectives
- Verbs
- Intransitive verbs
- Transitive verbs
- Intransitive verbs
- Adjectives
Source: Wiktionary
Grammatically, this word "idle" is an adjective. It's also a verb, more specifically, an intransitive verb and a transitive verb.