Since "without" is usually ܕܠܐ in Syriac, the Syriac usage here must be assumed to be something like b_ + "non X", as often in JLAtg. In the latter mostly as a variant of דלא.
Page refs. in other dictionaries:
DJPA: 103bDJBA: 614Drower/Macuch: 4b, 65b