Likutei Moharan 29:8/ליקוטי מוהר"ן כ״ט:ח׳

18. And this is (Habakkuk 2:5), “Moreover, wine is boged (a traitor).” The word “boGeD” alludes to the GiDim. Because of [wine], one “goes about gossiping, revealing secrets,” as in: Wine enters, secrets emerge (Sanhedrin 38a). For wine corresponds to the gidim, a surge of the blood, as in: “Look not at the wine, for yitaDaM (it is red)” (Proverbs 23:31) —its end is DaM (Sanhedrin 70a).

2This is also the reason [wine] is called tiRoSh. From this our Sages learned (Yoma 76b): If he is worthy, he becomes RoSh (head); if he is unworthy, he becomes RaSh (a pauper). In other words, when he is not ZaKhah (worthy)—i.e., he does not ZaKhekh (purify) the blood—he becomes poor, for he is not given any “bread from heaven.” But if he is zakhah —<i.e., he is zakhekh the blood>—he becomes rosh, corresponding to the mentalities. This alludes to drawing the whiteness from the brain, as in, “flowing from Lebanon”—<from the whiteness of the mind,> as above.