blush

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To become red in the face, especially from modesty, embarrassment, or shame; flush.
• intransitive verb To become red or rosy.
• intransitive verb To feel embarrassed or ashamed.
• noun A reddening of the face, especially from modesty, embarrassment, or shame.
• noun A red or rosy color.
• noun A glance, look, or view.
• noun Makeup used on the face and especially on the cheekbones to give a usually rosy tint.

from The Century Dictionary.

• To shine, as the sun.
• To glance; look.
• To become red in the face; redden all over the face: especially from modesty, embarrassment, confusion, or shame.
• To appear as if blushing; exhibit a red or roseate hue; bloom freshly or modestly.
• To be ashamed: with at or for.
• To make red.
• To express, show, or make known by blushing, or by a change of color similar to a blush.
• noun A gleam.
• noun A glance; glimpse; look; view: obsolete except in the phrase at first blush.
• noun Look; resemblance: as, she has a blush of her father.
• noun The suffusion of the cheeks or the face with a red color through confusion, shame, diffidence, or the like.
• noun A red or reddish color; a rosy tint.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb obsolete To suffuse with a blush; to redden; to make roseate.
• transitive verb To express or make known by blushing.
• intransitive verb To become suffused with red in the cheeks, as from a sense of shame, modesty, or confusion; to become red from such cause, as the cheeks or face.
• intransitive verb To grow red; to have a red or rosy color.
• intransitive verb To have a warm and delicate color, as some roses and other flowers.
• noun A suffusion of the cheeks or face with red, as from a sense of shame, confusion, or modesty.
• noun A red or reddish color; a rosy tint.
• noun at the first appearance or view.
• noun to cause to blush with shame; to put to shame.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The collective noun for a group of boys.
• noun An act of blushing.
• noun uncountable A sort of makeup, frequently a powder, used to redden the cheeks. Confer rouge.
• noun A color between pink and cream.
• verb To redden in the face from shame, excitement or embarrassment.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb become rosy or reddish
• verb turn red, as if in embarrassment or shame
• noun a rosy color (especially in the cheeks) taken as a sign of good health
• noun sudden reddening of the face (as from embarrassment or guilt or shame or modesty)