Tactile, round sort of window (7)
I believe the answer is:
lattice
'sort of window' is the definition.
(I've seen this before)
'tactile round' is the wordplay.
'round' indicates an anagram.
'tactile' is an anagram of 'LATTICE'.
(Other definitions for lattice that I've seen before include "Window with criss-cross strips of lead" , "Fretwork, grille" , "Framework in diagonal pattern" , "Support for plants" , "Network of crossed laths" .)