1) suckling, sucking child Part of Speech: noun masculine A Related Word by BDB/Strong’s Number: from H5763 Same Word by TWOT Number: 1579a
Brown-Driver-Briggs
עוּלnoun masculinesucking child, suckling; — construct יָמִים׳עIsaiah 65:20a suckling of days, i.e. a few days old; suffix עוּלָהּIsaiah 49:15 ("" בֶּןבִּֿטְנָהּ).
II. עול (√ of following; compare Arabic , feed, nourish; see Wetzst in DeJob 16:11).
Englishman's Concordance (References)
Strong's Hebrew: 5764. עוּל (ul) — 3 Occurrences
Job 24:9 HEB:מִשֹּׁ֣ד יָת֑וֹם וְֽעַל־ עָנִ֥י יַחְבֹּֽלוּ׃ INT: the breast the orphan sucking child the poor take
Isaiah 49:15 HEB:הֲתִשְׁכַּ֤ח אִשָּׁה֙ עוּלָ֔הּ מֵרַחֵ֖ם בֶּן־ NAS: forget her nursing child And have KJV: forget her sucking child, that she should not have compassion INT: forget A woman her nursing and have the son
Isaiah 65:20 HEB:מִשָּׁ֜ם ע֗וֹד ע֤וּל יָמִים֙ וְזָקֵ֔ן NAS: longer will there be in it an infant [who lives but a few] days, KJV:There shall be no more thence an infant of days, INT: in it longer an infant days an old
, 
feed, nourish; see Wetzst in DeJob 16:11).