seel

[seel] /sil/
verb (used with object)
1.
Falconry. to sew shut (the eyes of a falcon) during parts of its training.
2.
Archaic.
  1. to close (the eyes).
  2. to blind.
Origin
1490-1500; < Middle French siller, ciller, derivative of cil eyelash < Latin cilium eyelid, eyelash; see cilia
British Dictionary definitions for seel

seel

/siːl/
verb (transitive)
1.
to sew up the eyelids of (a hawk or falcon) so as to render it quiet and tame
2.
(obsolete) to close up the eyes of, esp by blinding
Word Origin
C15 silen, from Old French ciller, from Medieval Latin ciliāre, from Latin cilium an eyelid