hearken /härˈkn/ (archaic or literary)

1. To hear attentively
2. To listen

1. To listen to, pay attention to, heed (poetic)
2. To seek by enquiry (obsolete)

hearkˈener noun

• collarbone
• collarbones
• collar cell
• collar cells
• coll'arco
• collarco
• collard
• collards
• collared
• collared dove
• collared doves
• collarette
• collarettes
• collaring
• collarless
• collar of esses
• collar of SS
• collars
• collar stud
• collar studs
• collar-work
• collar-works
• collat.
• collatable
• collate