Raft meaning : A flat-bottomed craft able to float and drift on water, used for transport or as a waterborne platform. (by extension) Any flattish thing, usually wooden, used in a similar fashion. A thick crowd of seabirds or sea mammals, particularly a group of penguins when in the water. A collection of logs, fallen trees, etc. which obstructs navigation in a river. (when ordering food) A slice of toast. A square array of sensors forming part of a large telescope. To convey on a raft. To make into a raft. To travel by raft. To dock (toolbars, etc.) so that they share horizontal or vertical space.