1through 
/ˈθru:/ preposition
/ˈθru:/ preposition 1 : into one side and out the other side of (something)
▪ He hit the nail through the wood. ▪ She looked through the binoculars. ▪ The bullet had gone through his hand. 2 : from one side or end to another side or end of (something)
▪ He just walked through the door. ▪ The security guards pushed their way through the crowd. ▪ She could see a figure through the fog. ▪ I looked through the window. 3 — used to describe movement within a place or an area of land, air, etc. ▪ They spent a couple of hours walking through the mall. [=walking to various places in the mall] ▪ We rode our mountain bikes through the woods. ▪ The snake slithered through the grass. ▪ birds gliding through the air 4 — used to indicate the path that is followed to get somewhere or the path that someone or something moves along ▪ The bathroom is through that hallway on the left. ▪ Cold air was getting in through a crack in the wall. ▪ People usually come in through the side door. 5 : without stopping for (a traffic signal, a stop sign, etc.)
▪ He got caught driving through a red light. 6 a : by using (someone or something)
▪ The leaders communicated through interpreters. ▪ I learned of the job opening through her. [=she told me about the job opening] ▪ They ruled the country through fear. [=by making people afraid]
b : by doing (something)
▪ He learned to cook through [=by] watching his mother in the kitchen.
c : because of (something)
▪ The company's profits increased through improved sales. ▪ We will succeed only through [=by means of] hard work. ▪ knowledge that is gained through life experience 7 : over all the parts of (something) : throughout
▪ The illness swept through the town. ▪ The students were given time to go through their notes before the exam. 8 : from the beginning to the end of (something)
▪ He slept through the movie. ▪ Many students work through the summer. ▪ All through [=throughout] her life, she dreamed of going up into outer space. ▪ We left halfway through [=in the middle of] the lecture. 9 US — used to indicate the numbers, days, etc., that are included in a range ▪ The store is open Monday through Friday. [=is open Monday, Tuesday, Wednesday, Thursday, and Friday] ▪ Read chapters 2 through 5 for homework. 10 — used to say that you have survived or completed something ▪ We're through the worst part of the storm. [=the worst part of the storm has ended] ▪ I think she'll be more comfortable at college now that she's through her first semester. [=now that she has completed her first semester] 11 : to a state of official acceptance or approval by (an organization)
▪ The vote got the bill through the legislature.
▪ He hit the nail through the wood. ▪ She looked through the binoculars. ▪ The bullet had gone through his hand.
▪ He just walked through the door. ▪ The security guards pushed their way through the crowd. ▪ She could see a figure through the fog. ▪ I looked through the window.
▪ He got caught driving through a red light.
▪ The leaders communicated through interpreters. ▪ I learned of the job opening through her. [=she told me about the job opening] ▪ They ruled the country through fear. [=by making people afraid]
b : by doing (something)
▪ He learned to cook through [=by] watching his mother in the kitchen.
c : because of (something)
▪ The company's profits increased through improved sales. ▪ We will succeed only through [=by means of] hard work. ▪ knowledge that is gained through life experience
▪ The illness swept through the town. ▪ The students were given time to go through their notes before the exam.
▪ He slept through the movie. ▪ Many students work through the summer. ▪ All through [=throughout] her life, she dreamed of going up into outer space. ▪ We left halfway through [=in the middle of] the lecture.
▪ The vote got the bill through the legislature.
