Dictionary.net

• held together as by social or cultural ties; "a close-knit family"; "close-knit little villages"; "the group was closely knit"

2006 - WordNet 3.0
By Princeton University

• held together as by social or cultural ties; "a close-knit family"; "close-knit little villages"; "the group was closely knit"

2011 - English Dictionary Database
By DataStellar Co., Ltd