In reply to:

Not sure when it went obsolete then! In my Shorter Oxford (1969), no obsolescence is shown. In fact, it even has two meanings:
1. The act of tarrying, spending or loss of time; delay, procrastination
2. Sojourn; a 'stay'. Now chiefly US.


these are, in fact, the 2 senses given in the OED (1989); the first is now tagged obs -- the latest citation is dated "1745 Wright in N. Eng. Hist. & Gen. Reg. (1848) II. 207 We made no tarry but set forward for Fort Dummer."