guide·line 
(gīdlīn′)
(gīdlīn′)n.
A statement or other indication of policy or procedure by which to determine a course of action: guidelines for the completion of tax returns.
- per contra
- percurrent
- percuss
- percussion
- percussion cap
- percussion instrument
- percussionist
- percussive
- percussively
- percussiveness
- percutaneous
- percutaneous coronary intervention
- percutaneously
- Percy
- Percy
- Percy Bysshe
- Percy Lavon
- (Percy) Wyndham
- per diem
- perdition
- perdu
- perdue
- perdurability
- perdurable
- perdurably