Figure to get right home, almost, by bus (7)
I believe the answer is:
rhombus
'figure' is the definition.
(rhombus is a kind of figure)
'right home almost by bus' is the wordplay.
'right' becomes 'r' (common abbreviation).
'almost' means to remove the last letter (most of the word but not all of it).
'by' says to put letters next to each other.
'home' with its last letter taken away is 'hom'.
'r'+'hom'+'bus'='RHOMBUS'
'to get' acts as a link.
(Other definitions for rhombus that I've seen before include "Lozenge shape" , "Type of quadrilateral" , "Type of parallelogram" , "Skewed square" , "Form of quadrilateral" .)