Definition of through

• prep. - From end to end of, or from side to side of; from one surface or limit of, to the opposite; into and out of at the opposite, or at another, point; as, to bore through a piece of timber, or through a board; a ball passes through the side of a ship.
• prep. - Between the sides or walls of; within; as, to pass through a door; to go through an avenue.
• prep. - By means of; by the agency of.
• prep. - Over the whole surface or extent of; as, to ride through the country; to look through an account.
• prep. - Among or in the midst of; -- used to denote passage; as, a fish swims through the water; the light glimmers through a thicket.
• prep. - From the beginning to the end of; to the end or conclusion of; as, through life; through the year.
• adv. - From one end or side to the other; as, to pierce a thing through.
• adv. - From beginning to end; as, to read a letter through.
• adv. - To the end; to a conclusion; to the ultimate purpose; as, to carry a project through.
• a. - Going or extending through; going, extending, or serving from the beginning to the end; thorough; complete; as, a through line; a through ticket; a through train. Also, admitting of passage through; as, a through bridge.