in·ter·line 1 
(ĭn′tər-līn)
(ĭn′tər-līn)tr.v. in·ter·lined, in·ter·lin·ing, in·ter·lines
To insert between printed or written lines.
in′ter·lin′e·ation (-lĭn′ē-āshən) n.
- hearthstone
- heartily
- heartiness
- heartland
- heartless
- heartlessly
- heartlessness
- heart-lung machine
- heart massage
- heart of palm
- heart rate
- heart-rending
- heartrending
- Heart River
- heart-searching
- heartsease
- heart's-ease
- heartsick
- heartsickness
- heart-stricken
- heartstring
- heart-struck
- heartthrob
- heart-to-heart
- heartwarming