Common sound coming from some Bosch washers

• Indicator of a neutral vowel sound
• Vowel sound represented by an upside-down "e"
• One of two heard in America
• Many a vowel
• Symbol in pronunciation guides
• Stress-free character seemingly calm, having walked away initially
• Unstressed syllable in school was cut
• Upside down, lower case "e"

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1895, from German Schwa , ultimately from Hebrew shewa "a neutral vowel quality," literally "emptiness."

Wikipedia Word definitions in Wikipedia
In linguistics , specifically phonetics and phonology , schwa ( or rarely ) (sometimes spelled shwa ) refers to the mid central vowel sound (rounded or unrounded) in the middle of the vowel chart , denoted by the IPA symbol , or another vowel sound close ...