粵典 (words.hk)香港詞
心入面好大嘅困擾、擔憂 (big worry or trouble in one's mind; literally: big rock on one's heart)
名詞用例
終於出咗成績，可以放低心頭大石喇。
zung1 jyu1 ceot1 zo2 sing4 zik1, ho2 ji5 fong3 dai1 sam1 tau4 daai6 sek6 laa3.
The result is finally out, I have no more worry in my mind.