From an unused root (probably meaning to lisp, i.e. Practice enchantment); a conjurer -- astrologer.
Englishman's Concordance
1) necromancer, conjurer 2) (TWOT) astrologer, enchanter, exorcist Part of Speech: noun masculine A Related Word by BDB/Strong’s Number: from an unused root (probably meaning to lisp, i.e. practice enchantment) Same Word by TWOT Number: 181
Brown-Driver-Briggs
[אַשָּׁף] noun masculineconjurer, necromancer (probably Babylonian loan-word, Assyrian ašipu COTGloss compare DlPr 141, Aramaic אָשַׁף, ; see also Assyrian šiptu, conjuration) only plural אַשָּׁפִיםDaniel 1:20 ("" חַרְטֻמִּים), Daniel 2:2 ("" ׳ח, מְבַשְּׁפִים, כַּשְׂדִּים).
Daniel 1:20 HEB:כָּל־ הַֽחַרְטֻמִּים֙ הָֽאַשָּׁפִ֔ים אֲשֶׁ֖ר בְּכָל־ NAS: the magicians [and] conjurers who KJV: than all the magicians [and] astrologers that [were] in all his realm. INT: all the magicians conjurers who all
Daniel 2:2 HEB:לִקְרֹ֨א לַֽחַרְטֻמִּ֜ים וְלָֽאַשָּׁפִ֗ים וְלַֽמְכַשְּׁפִים֙ וְלַכַּשְׂדִּ֔ים NAS: in the magicians, the conjurers, the sorcerers KJV: the magicians, and the astrologers, and the sorcerers, INT: to call the magicians the conjurers the sorcerers and the Chaldeans