birotation (biro tash on)

[ birotatory dextrose. birotatory (bi-rō'ta-to-ri), a. [ A by wheels or disks connected by a common axis. birr1 (ber; Sc. pron. ber), n. [Sc., also bir, ber, beir, bere, bur, burr, etc., birr2 (bèr), v. i. [Sc., also bir, ber, etc., appar. imitative, like bur2, burr2, and birl2, q. v.] To make a whirring noise; make a noise like that of revolving wheels, or of millstones at work. [Scotch.]