thank-you-ma'am 
(thăngky-măm′)
(thăngky-măm′)n.
A bump or depression in a road.
[From its causing the head to nod as though in acknowledgment of a favor.]
- perisperm
- perissodactyl
- peristalsis
- peristaltic
- peristaltically
- peristomal
- peristome
- peristomial
- peristylar
- peristyle
- perithecial
- perithecium
- peritonaeum
- peritoneal
- peritoneal dialysis
- peritoneally
- peritoneum
- peritonitis
- peritrich
- peritrichous
- peritrichously
- perivisceral
- periwig
- periwinkle
- periwinkle