BDB2797
I. חֵ֫לֶף noun [masculine] exchange, only construct, as preposition in return for (so הֲלַף , [untranscribed source text 1778], common in Aramaic e.g. Gen 4:23 ᵑ7 ᵑ6 for Hebrew תַּחַת) — עֲבֹדָתָם ׳ ח (עֲבֹדַתְכֶם) Num 18:21; Num 18:31 (both P ).