Way of growing small trees in old basin to move around (6)
I believe the answer is:
bonsai
'way of growing small trees' is the definition.
(technique of growing small trees)
'old basin to move around' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'to move around' indicates anagramming the letters (I've seen 'moves around' mean this).
'o'+'basin'='obasin'
'obasin' is an anagram of 'BONSAI'.
'in' is the link.
(Other definitions for bonsai that I've seen before include "Dwarf trees and shrubs" , "Japanese method of growing miniature plants" , "Tree-dwarfing art" , "Tiny Japanese tree" , "Art of dwarfing shrubs" .)