That would be the word size.
myth
oven
beer
witswenswarswagswayswedswigswetswinswoeswuss
Doll is a toy. It contains 4 letters.
Trek!
A four-letter synonym for Ireland is "Eire" - but this is not an abbreviation.
Mend
Exam.
into
ally, chum
Eros
veg out = rest
yore
Wadi
happy... oh wait
buff, sand, gold