κλήθρα
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
English (LSJ)
Ion. κλήθ-ρη, ἡ,
A alder, Alnus glutinosa, Od.5.64, 239, Thphr. HP1.4.3, 3.3.1.
German (Pape)
[Seite 1450] ἡ, ion. κλήθρη, die Erle, Eller, Else; Od. 5, 239; Theophr.