seersucker
Concise Oxford English Dictionary © 2008 Oxford University Press:
seersucker/ˈsɪəsʌkə(r)/
▶noun a fabric with a surface consisting of puckered and flat sections.
– origin C18: from Pers. šir o šakar, lit. ‘milk and sugar’, (by transference) ‘striped cotton garment’.
'seersucker' also found in these Oxford entries:

