by
//baɪ//
Preposition
1
Near or next to; beside.
She sat by the window.
2
Through the means, action, or agency of; via.
I sent the package by mail.
3
Not later than; at or before a specified time.
Please finish your homework by 5 p.m.
4
Past; beyond in position.
I walked by the store.
5
According to; in accordance with.
By the rules, we must finish by 5 PM.
6
In units or measurements of; multiplied with (in dimensions).
The room is 4 meters by 3 meters.
7
During; in the course of.
I'll finish this work by noon.
Adverb
1
Past; beyond a point in time or space.
The train went by without stopping.
2
Near; in the vicinity.
I'll stop by later.
Synonym
Noun
1
A pass or bye; an automatic advancement in a tournament when an opponent is absent.
Our team got a by in the first round because the other team didn't show up.