rock·shaft 
(rŏkshăft′)
(rŏkshăft′)n.
A shaft that oscillates or rocks upon its bearings but does not revolve.
- pharmaco-
- pharmacodynamic
- pharmacodynamically
- pharmacodynamics
- pharmacogenomics
- pharmacognosist
- pharmacognostic
- pharmacognosy
- pharmacologic
- pharmacological
- pharmacologically
- pharmacologist
- pharmacology
- pharmacopeia
- pharmacopoeia
- pharmacopoeial
- pharmacopoeist
- pharmacotherapy
- pharmacy
- PharmB
- PharmD
- pharming
- pharming
- PharmM
- pharos