βόρειος · boreios — LSJ
from the quarter of the north wind, northern, exposed to the north, in the north
from the quarter of the north wind, northern, opp. νότιος, θάλασσα Hdt. 4.37, 6.31; β. ἀκτά exposed to the north, S. l.c.; τὸ β. τεῖχος Ar. Fr. 556, And. 3.5, Pl. R. 439e; τῆς Πλειάδος βορείου γενομένης having appeared in the north, Arist. HA 542b11.
2 of the north wind, during which northerly winds prevail, northerly winds, in the time of northerly winds
of the north wind, β. χειμών a winter during which northerly winds prevail, Hp. Aph. 3.11, Arist. Pr. 859b21; ἔαρ ib. 860a13; βόρεια, τά, northerly winds, ib. 944a1, etc. (rarely in sg., Ar. V. 265; ὅταν ᾖ βόρειον X. Cyn. 8.1); βορείοις in the time of northerly winds, Arist. HA 574a1, al.; βορείων ὄντων ib. 592a14: Comp. -ότερος Arat. 247, Alex.Aphr. in Metaph. 446.34: Sup. -ότατος Man. 4.241.
II
βόρειον, = ἐλλεβορίνη, Ps.-Dsc. 4.108; βόρειος, = ἀείζωον τὸ μέγα, ib. 88.