U

uggs Eggs
Courtesy of answers.yahoo.com

um Mum
Submitted by Diana Barnes

umums Cloth or Rag
Submitted by David Legge

umbertooties Umbrella
Submitted by Scott Vaux-Nobes

umpoo Shampoo
Submitted by Scott Vaux-Nobes

unc-shen Ice-cream 
Submitted by Ruth Robinson

unner Thunder
From babycenter.com

up-a-der To go up or down the stairs
Submitted by Emma Leaney

uppas Stars
As in Twinkle Twinkle 'Up above the world so high...'
Submitted by Louisa Elliston

uric Music
Submitted by Emma Leaney