wooden floor; board floor
Refers to a floor made of wooden planks, as opposed to tatami or earthen floors. Common in traditional Japanese architecture.
The wooden floor corridor in the old house creaks a little when you walk on it.
Standard spelling with okurigana.
Variant without okurigana; less common but still used.
Compound of 板 (ita, 'board, plank') and 敷き (shiki, 'spreading, laying'), from the verb 敷く (shiku, 'to spread, lay'). The reading いたじき is a rendaku form of いたしき.