Package: groff-base

"groff-base" package binaries on Debian:

/usr/bin/eqn /usr/bin/geqn /usr/bin/gpic /usr/bin/groff /usr/bin/grog /usr/bin/grops /usr/bin/grotty /usr/bin/gtbl /usr/bin/neqn /usr/bin/nroff /usr/bin/pic /usr/bin/preconv /usr/bin/soelim /usr/bin/tbl /usr/bin/troff

You may install this package on Debian with apt-get install groff-base