STEP Hebrew Lexicon: חָתַם

1) to seal, seal up, affix a seal

1a) (Qal)

1a1) to seal, affix one's seal

1a2) to seal up, fasten up by sealing

1b) (Niphal) to seal

1c) (Piel) to lock up

1d) (Hiphil) to be stopped

Aramaic equivalent: cha.tam (חֲתַם "to seal" H2857)