1. Side by side and close together
   "the troops marched shoulder-to-shoulder"

See also: close

• persuasive
• persuasively
• persuasiveness
• pert
• pertain
• pertainym
• Perth
• pertinacious
• pertinaciously
• pertinaciousness
• pertinacity
• pertinence
• pertinency
• pertinent
• pertinently
• pertly
• pertness
• perturb
• strong-growing
• strong-minded
• strong-scented
• strong-smelling
• strong-willed
• strongbox
• stronghold