Yes, jackboot is a Scrabble word!
...and is worth 23 points in Scrabble, and 27 points in Words with Friends
jackboot
Noun
1. (19th century) a man's high tasseled boot
What Scrabble words can I make with the letters in jackboot?
8 Letter Words
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words