Used as a suffix attached to a group noun (family, company, village, etc.) to mean 'the entire group' or 'all members of the group'. Often implies collective action or state.
The whole family went on a trip together.
The entire village prepared for the festival.
covering entirely
Rare standalone noun use meaning something is completely covered or wrapped in cloth, leather, etc. More often seen in compounds or descriptive contexts.
The chair is entirely covered in leather and has a luxurious feel.
Standard spelling; the kanji 総 means 'all' or 'whole', and ぐるみ is the suffix meaning 'including everything'.
Rarely used kanji form; 包み suggests wrapping, which fits the literal covering sense but is uncommon.
Compound of 総 (そう, 'all') + ぐるみ (suffix meaning 'including' or 'wrapping'). The suffix ぐるみ derives from the verb 包む (くるむ, 'to wrap'), implying enveloping or including everything.