ES tallarse
volume_up
{verb}

1. "para aliviar"

tallarse

2. "para limpiarse", Mexico

tallarse

3. "batallar mucho", Mexico, colloquial

tallarse (also: pencar, sudar, reventarse, descornarse)
volume_up
to work one's butt off {vb} [Amer.] [coll.]
tallarse (also: sudar, reventarse, descornarse, pechar)
volume_up
to slog one's guts out {vb} [Brit.] [coll.]