It would help to have a minimal working example (MWE) showing how you're defining your entries and what class you're using as these can make a difference to the appearance. For example, if the entries are defined like this:
\documentclass{article}
\usepackage[%
nonumberlist,
toc,
nopostdot,
style=altlist,
nogroupskip]{glossaries}
\makeglossaries
\renewcommand{\glsnamefont}[1]{\textbf{\textup{#1}}}
\newglossaryentry{accept}{name={accept},
description={(1) (of a game-try or a slam-try or an invitation to
take a particular action) make the call suggested or invited, or a
move in that direction\glspar (2) (of a transfer) make the call
suggested by the transfer}
}
\newglossaryentry{ace+spaces}{name={ace and spaces},
description={(adjective for hand) rich in high honors but weak
in lower honors and intermediates, and not having an apparent
source of tricks at notrump}
}
\begin{document}
\gls{accept}; \gls{ace+spaces}.
\printglossary
Then the glossary looks like this:
If you've used child entries like this:
\documentclass{article}
\usepackage[%
nonumberlist,
toc,
nopostdot,
style=altlist,
subentrycounter,
nogroupskip]{glossaries}
\makeglossaries
\renewcommand{\glsnamefont}[1]{\textbf{\textup{#1}}}
\newglossaryentry{accept}{name={accept},
description={\nopostdesc}
}
\newglossaryentry{accept1}{parent={accept},
description={(of a game-try or a slam-try or an invitation to
take a particular action) make the call suggested or invited, or a
move in that direction}}
\newglossaryentry{accept2}{parent={accept},
description={(of a transfer) make the call
suggested by the transfer}
}
\newglossaryentry{ace+spaces}{name={ace and spaces},
description={(adjective for hand) rich in high honors but weak
in lower honors and intermediates, and not having an apparent
source of tricks at notrump}
}
\begin{document}
\gls{accept1}; \gls{accept2}; \gls{ace+spaces}.
\printglossary
\end{document}
Then the glossary looks like this:
(The same as the first example.)
This matches the layout of the glossary in the user manual that you want to reproduce. Since this doesn't match the image you supplied from your document, then there's something in your document that's interfering with the default behaviour. Without knowing what that is, it's impossible to say how to fix it.
