בֶּסֶר‎ (beçer｜beh'-ser｜noun｜masculine｜unripe)
[Heb] בֶּסֶר‎, בֹּסֶר‎ ETCBC: בֹּסֶר‎ (subs｜grape) OSHL: b.cd.ab TWOT: 257 GK: H1235
Derivation: from an unused root meaning to be sour;
Strong's: an immature grape
KJV: unripe grape.