hack·ma·tack 
(hăkmə-tăk′)
(hăkmə-tăk′)n.
Any of several North American trees, especially the tamarack.
[Earlier hakmantak, hacmontac, perhaps from Western Abenaki.]
- commemoratory
- commence
- commencement
- commencer
- commend
- commendable
- commendably
- commendation
- commendatory
- commensal
- commensalism
- commensally
- commensurability
- commensurable
- commensurably
- commensurate
- commensurately
- commensuration
- comment
- commentarial
- commentary
- commentate
- commentator
- commerce
- commercial