Irritant diaper dermatitis (also known as "Diaper dermatitis" and "Napkin dermatitis" and commonly known as Diaper rash (U.S.) or Nappy rash (UK)) is a generic term applied to skin rashes in the diaper area that are caused by various skin disorders and/or irritants.

Noun

bottom (plural bottoms)

1. The lowest part from the uppermost part, in either of these senses:
   1. The part furthest in the direction toward which an unsupported object would fall.
   2. The part seen, or intended to be seen, nearest the edge of the visual field normally occupied by the lowest visible objects, as "footers appear at the bottoms of pages".
2. (euphemism) The buttocks or anus.
3. (baseball) The second half of an inning, the home team's turn to bat.
4. (BDSM) A submissive in a BDSM relationship or roleplay.
5. (LGBT, slang) A gay man who likes take a passive sexual role rather than an active role (e.g. to be penetrated in anal sex rather than to penetrate).
6. (nautical) a cargo vessel, a ship.
7. (nautical) certain parts of a vessel, particularly the cargo hold or the portion of the ship that is always underwater.
8. (UK, slang) character, reliability, staying-power, dignity, integrity or sound judgment.

   lack bottom

9. (UK, US) a valley, often used in place names.

   Where shall we go for a walk? How about Ashcombe Bottom?

10. (physics) A bottom quark.

Synonyms

• (1): base
• (2): arse (British, Australian, NZ), ass, fanny (North American), backside, bot, bott, botty, bum, buttocks
• (5): catcher
• See also Wikisaurus:buttocks
• See also Wikisaurus:anus