Power Thesaurus - thsr.us/sharp_as_a_tack Sharp as a tack means mentally acute. E.g. "She's very witty - she's sharp as a tack." | Facebook
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J.H. Reidhead III on Twitter: "@TheDrakinite That is a tack. It is red. THE SAME COLOR AS BLOOD!!!!!!1 #3spoopy5me" / Twitter
エアアタック/AIR A-TACK/オーバーグリップ/3本入(4G0118120/4G0128320/4G0201548/SWA101) :swt-4g0118-0128:ラケットプラザ - 通販 - Yahoo!ショッピング
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Learning the Kitefoil Tack – Part 1 : Four Tacks but Where to Start? - Progression Sports : Become a Better Kiteboarder / Kitesurfer / Kitefoiler
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