Joktan=“smallness” 1) son of Eber and descendant of Shem and patriarch of various Arabian tribes Part of Speech: noun proper masculine A Related Word by BDB/Strong’s Number: from H6994
Brown-Driver-Briggs
יָקְטָןproper name, masculineson of Eber, descendant of Shem (DHM in MV compare his name in Arabic tradition, namely †aµtân: the √ √ and being both explained in Muµî‰ by strike, beat; see Lane1777ff.) — Genesis 10:25,26,29=1 Chronicles 1:19; 1 Chronicles 1:20; 1 Chronicles 1:23, 'father' of various tribes of Yemen; ᵐ5Ιεκταν.
Genesis 10:25 HEB:וְשֵׁ֥ם אָחִ֖יו יָקְטָֽן׃ NAS: and his brother's name [was] Joktan. KJV: and his brother's name [was] Joktan. INT: name and his brother's Joktan
Genesis 10:26 HEB: וְיָקְטָ֣ן יָלַ֔ד אֶת־ NAS:Joktan became the father of Almodad KJV:And Joktan begat Almodad, INT:Joktan became of Almodad
Genesis 10:29 HEB:אֵ֖לֶּה בְּנֵ֥י יָקְטָֽן׃ NAS: these were the sons of Joktan. KJV: all these [were] the sons of Joktan. INT: these were the sons of Joktan
1 Chronicles 1:19 HEB:וְשֵׁ֥ם אָחִ֖יו יָקְטָֽן׃ NAS: and his brother's name was Joktan. KJV: and his brother's name [was] Joktan. INT: name and his brother's was Joktan
1 Chronicles 1:20 HEB: וְיָקְטָ֣ן יָלַ֔ד אֶת־ NAS:Joktan became the father of Almodad, KJV:And Joktan begat Almodad, INT:Joktan became of Almodad
1 Chronicles 1:23 HEB:אֵ֖לֶּה בְּנֵ֥י יָקְטָֽן׃ ס NAS: these [were] the sons of Joktan. KJV: All these [were] the sons of Joktan. INT: these the sons of Joktan
and 
being both explained in Muµî‰ by 
strike, beat; see Lane1777ff.) — Genesis 10:25,26,29=1 Chronicles 1:19; 1 Chronicles 1:20; 1 Chronicles 1:23, 'father' of various tribes of Yemen; ᵐ5Ιεκταν.