dou·ble·tree 
(dŭbəl-trē′)
(dŭbəl-trē′)n.
A crossbar on a wagon or carriage to which two whiffletrees are attached for harnessing two animals abreast.
- pharmacologic
- pharmacological
- pharmacologically
- pharmacologist
- pharmacology
- pharmacopeia
- pharmacopoeia
- pharmacopoeial
- pharmacopoeist
- pharmacotherapy
- pharmacy
- PharmB
- PharmD
- pharming
- pharming
- PharmM
- pharos
- Pharsalus
- pharyng-
- pharyng-
- pharyngal
- pharyngeal
- pharyngeal arch
- pharyngeal cleft
- pharyngeal groove