Place accommodating new kid originally tall and thin (5)
I believe the answer is:
lanky
'tall and thin' is the definition.
(I've seen this before)
'place accommodating new kid originally' is the wordplay.
'place' becomes 'lay' (synonyms).
'accommodating' means one lot of letters goes inside another.
'originally' says to take the initial letters.
The first letters of 'new kid' is 'nk'.
'lay' going around 'nk' is 'LANKY'.
(Other definitions for lanky that I've seen before include "Long and slender" , "Inelegantly tall and thin" , "Tall and gangling" , "Bony" , "Far from podgy" .)