From an unused root apparently meaning to grip; a lock of stalks -- handful.
Englishman's Concordance
1) bundles 1a) of grain Part of Speech: noun masculine A Related Word by BDB/Strong’s Number: from an unused root apparently meaning to grip Same Word by TWOT Number: 1875a
Brown-Driver-Briggs
צְבָתִיםnoun [masculine] plural bundles of grainRuth 2:16 (VogelestLandwirthschaft 61swaths [grasped and] lifted for binding).
צדד (√of following; compare Arabic turn away, then shun, alienate; Late Hebrew Biblical Aramaic צַד=Biblical Hebrew; Arabic vicinity, in front of, in the vicinity of; Aramaic צֵיד, by, apud).
Ruth 2:16 HEB:לָ֖הּ מִן־ הַצְּבָתִ֑ים וַעֲזַבְתֶּ֥ם וְלִקְּטָ֖ה NAS: pull out for her [some grain] from the bundles and leave KJV: And let fall also [some] of the handfuls of purpose INT: pull from the bundles and leave may glean