dunnage
/ˈdʌnɪdʒ/noun
mass noun
1- loose wood, matting, or similar material used to keep a cargo in position in a ship's hold（使货物在船舱内不发生位移的）垫料, 衬垫, 货垫。
1.1
- informal a person's belongings, especially those brought on board ship〈非正式〉（尤指带上船的）个人行李, 杂件行李。
词源
Middle English: of unknown origin.