Scottish National Dictionary (1700–)
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First published 1934 (SND Vol. I).
This entry has not been updated since then but may contain minor corrections and revisions.
†BACK-TACK, n. (See quot.) [′bɑk′tɑk]Sc. 1890 Bell's Dict. Law Scot. 82:
Back-tack; was a tack connected with wadsets, whereby the actual possession of the wadset lands was continued, or returned, to the proprietor or reverser, on payment of a rent corresponding to the interest of the loan.
