Webster's English Dictionary

through

1. through also thru \(')thru:\ pp [ME thurh, thruh, through, fr. OE thurh; 
   akin to OHG Xdurh through, L trans across, beyond, Skt tarati he crosses 
   over 1a1: in at one side or point and out at another esp. the opposite side 
   of  {drove a nail ~ the board} {a path ~ the woods} 1a2: by way of {left ~ 
   the window}  1a3: - used as a function word to indicate passage between or 
   among sepa rate units {a highway ~ the trees} 1a4: without stopping for : 
   PAST {drove ~ a red light}  1b: - used as a function word to indicate 
   passage into and out of a trea tment, handling, or process {has already 
   passed ~ his hands} 2a: by means of : by the agency of  2b: because of 
   {failed ~ ignorance}  3a: over the whole surface or extent of  3b: - used 
   as a function word to indicate movement within a large expans e {flew ~ the 
   air} or exposure to a specified set of conditions {put her ~ hell} 4a: 
   during the entire period of  4b: from the beginning to the end of  4c: to 
   and including {Monday ~ Friday}  5a: - used as a function word to indicate 
   completion or exhaustion {go t ~ the book} {went ~ a fortune in a year} 5b: 
   - used as a function word to indicate acceptance or approval esp. by  an 
   official body {got the bill ~ the legislature}
2. through also thru \'thru:\ av 1: from one end or side to the other  2a: 
   from beginning to end  2b: to completion, conclusion, or accomplishment 
   {see it ~}  3: to the core : COMPLETELY  4: into the open : OUT {break ~} 
3. through also thru \'thru:\ aj 1a: extending from one surface to another 
   {a ~ mortise}  1b: admitting free or continuous passage : DIRECT {a ~ roa 
   d} 2a: going from point of origin to destination without change or 
   reshipment  {~ train} 2b: of or relating to such movement {a ~ ticket}  3a: 
   arrived at completion or accomplishment {he is ~ with the job)> 3b: 
   WASHED-UP, FINISHED {you're ~ - you've really ha d it}