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1. The act of treating something to make it repel water
   - waterproofing

1. Make tight; secure against leakage
   "seal the windows";
   - seal off
    
2. Close with or as if with a seal
   "She sealed the letter with hot wax"
    
3. Decide irrevocably
   "sealing dooms"
    
4. Affix a seal to
   "seal the letter"
    
5. Cover with varnish
   - varnish
    
6. Hunt seals

Sounds like: ceiling, seeling

Derived forms: sealings

Type of: affix, close, coat, decide, determine, fill up, hunt, hunt down, make up one's mind, protection, run, shut, stick on, surface, track down

Antonym: unseal

Encyclopedia: Sealing