Simple past tense and past participle of fall about.
Wiktionary
Fell-about Sentence Examples
It was either sleeveless (colobium) or sleeved (tunica manicata or manuleata), and originally fell about to the knee, but later on reached to the ankles (tunica talaris).
The maiden's gown was soft as satin and fell about her in ample folds, while dainty lace-like traceries trimmed the bodice and sleeves.
The small twigs snapped and fell about me in showers.
