Based on 85 ${\mathrm{pb}}^{\mathrm{\ensuremath{-}}1}$ data of $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{TeV}$ collected using the D\O{} detector at Fermilab during the 1994--1995 run of the Tevatron, we present a direct measurement of the total decay width of the W boson ${\ensuremath{\Gamma}}_{W}.$ The width is determined from the transverse mass spectrum in the $\stackrel{\ensuremath{\rightarrow}}{W}e+{\ensuremath{\nu}}_{e}$ decay channel and found to be ${\ensuremath{\Gamma}}_{W}{=2.23}_{\ensuremath{-}0.14}^{+0.15}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.10(\mathrm{syst})\mathrm{GeV},$ consistent with the expectation from the standard model.