Initialism of Build–own–operate–transfer.

plural of bootful

simple past tense and past participle of boot up

(UK, colloquial) Dressed smartly.

Wearing a suit and smart boots.

simple past tense and past participle of boot out

Hieraaetus pennatus, a medium-sized mostly migratory bird of prey with a wide distribution in the Palearctic and southern Asia. / Any eagle of the subfamily Aquilinae.

plural of booted eagle

Iduna caligata, an Old World warbler in the tree warbler group.

Alternative form of jackbooted