n.
Function: verb
Inflected Form: sick · led ; sick · ling \ ' si-k( ə -)li ŋ \
Date: 1922
transitive verb
1 : to mow or reap with a sickle
2 : to change (a red blood cell) into a sickle cell
intransitive verb : to change into a sickle cell <the ability of red blood cells to sickle >