through Definition

through
thru
prep

1. Going from one side or end of something to the other.

Example: a road through the village
2. From place to place within something; everywhere within it.

Example: searched through the house
3. From the beginning to the end of something.

Example: read through the magazine
(N Amer)
4. Up to and including.

Example: Tuesday through Thursday
5. Because of something.

Example: lost his job through stupidity
6. By way of, means of or agency of something; by.

Example: related through marriage

adverb

1. Into and out of; from one side or end to the other.

Example: go straight through
2. From the beginning to the end.
3. Into a position of having completed, especially successfully.

Example: sat the exam again and got through
4. To the core; completely.

Example: soaked through
(Brit)
5. In or into communication by telephone.

Example: put the caller through

adj

1. Said of a journey, route, train or ticket, etc: going or allowing one to go all the way to one's destination without requiring a change of line or train, etc or a new ticket.
2. Said of traffic: passing straight through an area or town, etc without stopping.
3. Going from one surface, side or end to another.

Example: a through road

Idiom: be through

To have no further prospects or intentions in some regard.
Example: He is through as a businessman

Idiom: be through with someone

To have no more to do with them.

Idiom: be through with something

To have finished or completed it.

Idiom: through and through

Completely. See also thro'.
Thesaurus: completely, thoroughly, entirely, fully, totally, utterly, wholly, unreservedly, to the core, from top to bottom, from beginning to end.

Etymology: Anglo-Saxon thurh; compare thorough.