As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):
- m., pith, strength, courage, daring (eigi hófum ver þrek til at berjast við Þorstein) hafa þrek við e-m, to be a match for; mikill ~ ok afl.
Possible runic inscription in Younger Futhark:ᚦᚱᛁᚴᚱ
Also available in related dictionaries:
This headword also appears in dictionaries of other languages closely related to Old Icelandic.