ὑδροσέλινον
From LSJ
λύπης ἰατρός ἐστιν ἀνθρώποις λόγος → for men reason cures grief, for men reason is a healer of grief, a physician for grief is to people a word, pain's healer is a word to man, logos is a healer of man's anguish, talking through one's grief is therapeutic
English (LSJ)
τό,
A = ἑλειοσέλινον, Ps.-Dsc. 3.64.
Greek (Liddell-Scott)
ὑδροσέλῑνον: τό, = ἐλειοσέλινον, Διοσκ. 3. 75.