The abasement of oneself.

(idiomatic) A nonchalant dismissal of a significant accomplishment.

The small gap in a needle, with just enough space for a thread to pass through.

Alternative spelling of A1

(US, military, historical) Cox-Klemin A-1 Air Ambulance, never mass produced. / (US, military) Skyraider single engine general-purpose attack aircraft.

Third-person singular simple present indicative form of have a clue

simple past tense and past participle of have a clue

(colloquial) To be knowledgeable about a topic or situation.

(idiomatic) To go to bed to sleep / (idiomatic) To cease what one has been doing for the night

(idiomatic) To cease the activity for the day. / (idiomatic) To retire.