Position of a bloom (5)
I believe the answer is:
lotus
I believe this is a double definition.
'position' is the first definition.
(lotus is a yoga position)
'a bloom' is the second definition.
(I know that Lotus is a type of bloom)
'of' acts as a link.
(Other definitions for lotus that I've seen before include "Aquatic plant" , "In myth, a plant whose fruit induced forgetfulness" , "Sacred symbol" , "A blooming" , "One of the lilies" .)