A primitive root; to collect; hence, to enfold:
[כָּנַס] verb gather, collect (Late Hebrew id.; Aramaic כְּנַס (see also כנשׁ); Ethiopic in derived conjugation assemble for worship, etc.; Arabic is sweep, sweep away, destroy) —
Qal (late) Perfect1singular כָּנַסְתִּי Ecclesiastes 2:8; Imperative כְּנוֺס Esther 4:16; Infinitive construct 1 Chronicles 22:2-3t.; Participle כֹּנֵס Psalm 33:7; — gather people 1 Chronicles 22:2; Esther 4:16; ׳כ תְּהוֺמוֺת בְּאוֺצָרוֺת נֹתֵן הַיָּ֑ם מֵי כַּנֵּד Psalm 33:7 (read perhaps, for כַּנּאֹד כַּנֵּד, as in a wine skin, see נד נאד,); gather, collect portions of harvest for priests and Levites Nehemiah 12:44; stones Ecclesiastes 3:5 (opposed to השׁליך); silver and gold = amass wealth 2:8; absolute 2:26 ("" אסף).
Pi`el Perfect1singular אֶתְכֶם וְכִנַּסְתִּ֫י Ezekiel 22:21 and I will gather you together (for punishment; Co translates to 22:20 and reads for וְהִנַּחְתִּ֫י; "" קבץ 22:19; 22:20); of restoration אֶלאַֿדְמָתָם וְכִנַּסְתִּים 39:28, and יְכַנֵּס Psalm 147:2.
Hithpa`el Infinitive construct צָרָה כְּהִתְכַּנֵּסוְהַמַּסֵּכָה Isaiah 28:20 and the covering is (too) narrow when one gathers oneself together ("" הַמַּצָּע מֵהִשְׂתָּרֵעַקָצַר), 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.