All 4 Uses

boycott
in
The Nickel Boys
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Life's photo essays conveyed him to the front lines, to bus boycotts in Baton Rouge, to counter sit-ins in Greensboro, where young people not much older than him took up the movement.†
p. 22.1
He was ten years old when the two girls from Florida A&M University proposed the bus boycott.†
p. 32.7
When the demonstrations trailed off, she continued to boycott downtown stores, although it was not clear how much of that was solidarity or her own protest against high prices.†
p. 33.1 *
Yes, Harriet had joined the bus boycott.†
p. 33.5

Definitions:

(1) (boycott)
to refuse to buy things (from someone); or to refuse to participate in an activity (with someone) in order to express disapproval
(2) (meaning too rare to warrant focus)