c. 1400, "make corrections or insertions between the lines of (a document)," from inter- "between" + line; perhaps modeled on Old French entreligniere or Medieval Latin interlineare "write between lines." Related: Interlined; interlining; interlineation.

1550s, "to stuff or interline in the manner of a quilt; to stitch together in the manner of a quilt," from quilt (n.). Related: Quilted; quilting. Quilting bee, "a social gathering of women for the purpose of assisting one of their number in quilting a counterpane," usually followed by a supper or other entertainment, is attested from 1824, originally a New England custom (see bee).

late 14c., "situated between the lines," from Medieval Latin interlinearis "that which is between the lines," from inter "between" (see inter-) + Latin linearis (see linear). Meaning "having interpolated lines" is from 1620s. Related: Interlineary.