Flŭnk1, v. i.
[imp. & p. p. FLUNKED (flunkt); p. pr. & vb. n. FLUNKING.] To fail, as on a lesson; to back out, as from an undertaking, through fear. [U. S.]
2 entries under this word
Flunk
Flŭnk2, n.
A failure or backing out. [U. S.]