SWALLOWTAILS
Scrabble letter values: S1W4A1L1L1O1W4T1A1I1L1S1 = 18
Definition
SWALLOWTAILS is the plural of SWALLOWTAIL.
noun SWALLOWTAIL: a man's full-dress jacket with two long tapering tails at the back.
Synonyms of SWALLOWTAIL: swallow-tailed_coat, morning_coat