Lexical Definition

‎עַכְשׁוּב‎ ʻakshûwb (ak-shoob') viper ^H:N-M
probably from an unused root meaning to coil

adder.

• an asp (from lurking coiled up)

1) asp, viper
1a) asp, viper
1b) perhaps spider

Brown-Driver-Briggs

‎עַכְשׁוּב‎ noun masculine usually asp, viper (so ᵐ5 ᵑ9; perhaps conject. from sense and || ‎נָחָשׁ‎), but perhaps = (? corrupt for) ‎עַכָּבִישׁ‎ spider (q. v.; compare ‎ᵑ7‎^{on the passage}); — ‎׳‎‎חֲמַת ע‎ Ps 140:4* a viper's (? spider's) venom is under their lips (see especially Che and references). ‎עַל‎ see ‎עלה‎ ‎עֹל‎ see III. ‎עלל‎.

Brown-Driver-Briggs References