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pelear 
a  vi 
1  (físicamente)  to fight 
los dos púgiles pelearán por el título mañana  the two boxers will fight for the title tomorrow 
los perros peleaban por un hueso  the dogs were fighting over a bone 
siempre me toca pelear con los niños a la hora del baño  I'm always the one who has to battle with the children at bathtime 
2  (=esforzarse) to struggle 
tuvo que pelear mucho para mantener a su familia  he had to struggle hard to support his family, it was a hard struggle for him to support his family 
b pelearse  vpr 
1  (físicamente)  to fight 
dos niños se estaban peleando en el patio  there were two children fighting in the playground 
estaban peleándose a puñetazos  they were punching each other  o  laying into each other with their fists 
los hermanos se peleaban a patadas  the two brothers were kicking each other 
se estaban peleando por unos caramelos  they were fighting over some sweets 
pelearse con algn  to fight sb 
2  (=discutir) to argue, quarrel 
siempre nos peleamos cuando hablamos de política  we always end up arguing whenever we talk about politics 
3  (=romper una relación) 
[dos amigos] 
to fall out 
[novios] 
to split up, break up 
se ha peleado con todas sus amigos  he's fallen out with all his friends 
se ha peleado con su novio  she has broken up  o  split up with her boyfriend 

Collaborative Dictionary     Spanish-English
pelear v. 1) fight (vi), 2) fight (refl) 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"