bloomer

Noun

WordNet 3.0

a flower that blooms in a particular way“a night bloomer”
an embarrassing mistakeSynonyms: blunder blooper bungle pratfall foul-up fuckup flub botch boner boo-boo

Bloomer \Bloom"er\, n. [From Mrs. Bloomer, an American, who sought to introduce this style of dress.]

1.A costume for women, consisting of a short dress, with loose trousers gathered round ankles, and (commonly) a broad-brimmed hat. [1913 Webster]

2.A woman who wears a Bloomer costume. [1913 Webster]