/bi twikst"/ , prep., adv.
1. Chiefly South Midland and Southern U.S. between.
2. betwixt and between , neither the one nor the other; in a middle or unresolved position: Not wanting to side with either her father or her mother, she was betwixt and between.
[ bef. 950; ME betwix, OE betwix, betweox, equiv. to be- BE- + tweox, c. OHG zwiski two each; akin to G zwischen between (prep.) ]