Yoga position for many in America (5)
I believe the answer is:
lotus
'yoga position' is the definition.
(lotus position from yoga)
'many in america' is the wordplay.
'many' becomes 'lot' (a lot of something).
'in america' becomes 'U.S.' ('U.S.' is part of 'america').
'lot'+'us'='LOTUS'
'for' is the link.
(Other definitions for lotus that I've seen before include "Car manufacturer - plant" , "Large water lily" , "In Greek mythology, a fruit which induces forgetfulness" , "Plant widely regarded as sacred" , "----- Eaters, indolent hedonists" .)