Rounding first of chairs, change row (11)
I believe the answer is:
altercation
'row' is the definition.
(altercation is a kind of row)
'rounding first of chairs change' is the wordplay.
'rounding' indicates putting letters inside.
'first of' suggests taking the first letters.
'change' becomes 'alteration' (alteration is a kind of change).
The initial letter of 'chairs' is 'c'.
'c' going inside 'alteration' is 'ALTERCATION'.
(Other definitions for altercation that I've seen before include "heated argument" , "Noisy disagreement" , "Noisy argument" , "breeze" , "One's argued" .)