This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. Simple past tense and past participle of track.

adj. having tracks

"But I must not get too side-tracked from the real reason I was moved to post a response; the issue of the recently over-publicized "Ardi" and its implications for human evolution."

tracked    tracking    tracks   

bring in    introduce    create    make    evidence    grounds    groove    channel    observe    track and field   

trace    road    course    track-laying machine    off the track    side track    to take the back track    to have the inside track    decauville track    on track   

track down   

trace    vestige    footprint    road    course    way    tow    wake    trail    path   

Adak    Black    Braque    Chirac    Jack    Jacques    Lak    Mac    Mack    Macke   

Music    Auto   

trail    line    stream    drive    train    route    movement    band    channel    pattern