Heartache or cardiac pain; a variant form of cardialgia used in older or alternative medical terminology.
From Greek 'kardia' (heart) + 'algos' (pain) + '-y' (forming abstract nouns, like 'agony' from 'agon'). This represents an alternative suffix choice for the same root meaning.
Medieval and Renaissance physicians loved creating synonym pairs—cardialgia AND cardialgy coexisted because having multiple terms made practitioners seem more learned, even though they meant identical things.
Complete word intelligence in one call. Free tier — 50 lookups/day.