Straightaway in a sentence as a noun

On the first straightaway imagine horse 1 is in the lead.

Straightaway in a sentence as an adjective

So, from horse 1's frame of reference, horse 2 indeed did orbit it once!Now imagine the horses on a modified track that instead of two straightaways and two half-circle turns has four straightaways and four quarter-circle turns.

Straightaway definitions

noun

a straight segment of a roadway or racecourse

See also: straight

adjective

performed with little or no delay; "an immediate reply to my letter"; "a prompt reply"; "was quick to respond"; "a straightaway denial"

See also: immediate prompt quick

adverb

without delay or hesitation; with no time intervening; "he answered immediately"; "found an answer straightaway"; "an official accused of dishonesty should be suspended forthwith"; "Come here now!"