Lexical Definition

‎ἄθλησις‎ áthlēsis (ath'-lay-sis) struggle ^G:N-F
from ‎ἀθλέω‎

fight.

• a struggle (figuratively)

Abbott-Smith

*† ἄθλησις, -εως, ἡ (< ἀθλέω),
a contest, combat, esp. of athletes; fig., a struggle: He 10:32 (for exx., v. MM, VGT, s.v.).†

Abbott-Smith References

Liddell-Scott-Jones

ἄθλησις-ησις, ἡ,

contest, combat, especially of athletes, [Refs 2nd c.BC+]; κατὰ τὴν ἄ. 'in the athletic world', [Refs 3rd c.AD+]; training, practice, [Refs 1st c.BC+]

__2 generally, struggle, trial, ἄ. ὑπομένειν[NT]

_{LSJ Scripture Refs: Heb.10.32}