A primitive root; properly, to join; used only as a denominative from 'etsel; to separate; hence, to select, refuse, contract -- keep, reserve, straiten, take.
see HEBREW 'etsel
H680. atsal
[אָצַל] verb denominative lay aside, reserve, withdraw, withhold —
Qal Perfect אָצַלְתָּ Genesis 27:36; אָצַלְתִּי Ecclesiastes 2:10; וְאָֽצַלְתִּ֫י consecutive Numbers 11:17; — reserve, בְרָכָה לִי Genesis 27:36; (withdraw), set apart מִןהָֿרוּחַ Numbers 11:17; withhold מֵהֶם Ecclesiastes 2:10.
Niph`al Perfect נֶאֱצַל Ezekiel 42:6 be withdrawn, i.e. shortened or narrowed.
Hiph`il Imperfect וַיָּאצֶל Numbers 11:25 (Kö1. 390) = Qal 11:17.