Free dictionary online: translation in English, Spanish, French, Italian, Chinese, Russian, definitions, synonyms...
Results found in several dictionaries: Collins, Collaborative Dictionary
alambre   sm wire 
MODISMOS estar hecho un alambre  to be as thin as a rake 
 alambre cargado live wire 
 alambre de espino, alambre de púas barbed wire 
 alambre de tierra earth wire, ground wire  (EEUU)  
 alambre espinoso barbed wire 
 alambre forrado covered wire

Collaborative Dictionary     Spanish-English
alambre espinoso pref. barbed wire Reverso General Dictionary 
alambre de espino pref. barbed wire Reverso General Dictionary 
alambre de púas pref. barbed wire Reverso General Dictionary 
***
'alambre' also found in translations in English-Spanish dictionary
barbwire n. el alambre de púas Reverso General Dictionary 
barbed wire n. el alambre de púas Reverso General Dictionary 
fuse wire n. el alambre de fusible Reverso General Dictionary 

"Collins Spanish Dictionary 8th edition published in 2005 © William Collins Sons & Co Ltd 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005"