Old Testament Hebrew Lexical Dictionary
Strong's #1155 - בֹּסֶר
1) unripe grapes, sour grapes
V) rxb (בסר BSR) - Report: When good news is brought a feast with meat is prepared. [df: rVb] KJV (24): (vf: Hitpael, Piel) tidings, show forth, publish, messenger, preached - Strongs: H1319 (בָּשַׂר)
Nf ) rxb (בסר BSR) - Flesh: The skin and muscle or the whole of the person. Also meat as food. [Hebrew and Aramaic] [df: rVb] KJV (273): flesh, body - Strongs: H1154 (בֶּסֶר), H1320 (בָּשָׂר), H1321 (בְּשַׂר)
Jeff Brenner, Ancient Hebrew Research Center Used by permission of the author.
בֹּסֶר m. collect, sour and unripe grapes, Isaiah 18:5; Jeremiah 31:29, 30 Jeremiah 31:30; Ezekiel 18:2. It differs from בְּאֻשִׁים labruscœ, wild grapes, see that word; LXX. ὄμφαξ. (Ch. בּוּסְרָא id. Syr. ܒܶܣܪܶ̈ܐ sour grapes.)
[בְּעָא see after בָּעָה.]