Abduct - ab, away + ducere, pull.⏎
Ampulla - ampulla, flask.⏎
Azygos - azygos, unyoked (not a pair) named for its asymmetry.⏎
Acetabulum - acteum, vinegar + abrum, holder. Small cup for vinegar, hence any small cup.⏎
Appendix - ad, toward; pendere, to hang. Hence appendage.⏎