Of doubtful origin and authenticity; probably meaning strength -- mighty.
Englishman's Concordance
1) glow, heat 1a) meaning dubious Part of Speech: noun masculine A Related Word by BDB/Strong’s Number: of doubtful origin and authenticity Same Word by TWOT Number: 1611
Brown-Driver-Briggs
[עֲיָם] noun [masculine] dubious, possibly glow (Arabic , to thirst, thirst, internal heat), si vera lectio (so Du; on form compare NöZMG xxxvii (1883), 526); — construct בֵּעְיָם רוּחוֺIsaiah 11:15, read perhaps בְּעֹצֶם (so apparently Vrss) Thes Luzz Krochm Che GuKau Gr PerlesAnal. 52.
Isaiah 11:15 HEB:עַל־ הַנָּהָ֖ר בַּעְיָ֣ם רוּח֑וֹ וְהִכָּ֙הוּ֙ NAS: the River With His scorching wind; KJV: sea; and with his mighty wind INT: over the River his scorching wind will strike
Hosea 10:10 HEB:[עֵינֹתָם כ] (עֹונֹתָֽם׃ ק) INT: are bound their double mighty