expend

present singular third person expends · participle present expending · participle past expended · past expended · first person past singular expended · archaic present second person singular expendest · past second person singular expended · archaic past second person singular expendedst · present singular third person expends · archaic present singular third person expendeth · past singular third person expended · past plural expended · past subjunctive expended · participle present expending · participle past expended

1. transitiveTo consume, exhaust (some resource).

   Here Black expends an important tempo. 11...B-K3 seems better.

   1962 May, Max Euwe, “Game of the Month”, in Chess Review

   3 more examples

   If my death might make this island happy […] I would expend it with all willingness.

   1591 (date written), William Shakespeare, “The Second Part of Henry the Sixt, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies. […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene i]

   So next day the hunting began. I did not know how to shoot, but I proceeded to learn. And when I had expended some thirty shells for three seals, I decided that the ammunition would be exhausted before I acquired the necessary knowledge. I had used eight shells for lighting fires before I hit upon the device of banking the embers with wet moss, and there remained not over a hundred shells in the box.

   1904, Jack London, chapter 30, in The Sea-Wolf (Macmillan’s Standard Library), New York, N.Y.: Grosset & Dunlap, →OCLC

   To handle the unceasing traffic increase, immense sums of money are being expended in dealing with bottlenecks.

   1962 December, “Beyond the Channel: Switzerland: Federal Railways' progress”, in Modern Railways, page 416