Brown-Driver-Briggs (BDB)
H3664
H3664 [ כָּנַס ] gather , collect . gather . and I will gather you together . and the covering is (too) narrow when one gathers oneself together , i.e. the bed is too short to stretch oneself at full length, and when one (perforce) draws up the feet, the covering becomes too narrow.
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain