We don't have synonyms for goalline yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are galling, goalie and coalmine.
(n) :
Alternative form of goal line. [(rugby league, soccer, hurling, Gaelic football) the boundary of the field that runs along its width at each end, and across the front of the goal.]
(n) :
Alternative form of goal line. [(rugby league, soccer, hurling, Gaelic football) the boundary of the field that runs along its width at each end, and across the front of the goal.]