רגל

Etymology 1
From.

Noun

 * 1) foot, leg
 * 2) leg (as of a table or chair)
 * 3) foot unit of length
 * 4)  time, instance, occurrence
 * 5)  pilgrimage, festival
 * 6) spy, informant
 * 1)  time, instance, occurrence
 * 2)  pilgrimage, festival
 * 3) spy, informant
 * 1)  pilgrimage, festival
 * 2) spy, informant
 * 1) spy, informant
 * 1) spy, informant

Usage notes

 * The plural form is used only for the meaning of "instance, occurrence", and survived in Modern Hebrew only in certain idioms. For the meaning "leg", the dual form serves as the plural form too in both Modern and Biblical Hebrew (according to the traditional Tiberian vocalization).
 * Each of the words and, which are synonymous in Biblical Hebrew, has acquired its own distinct meaning in Modern Hebrew. While  is used today only in the meaning of "leg",  is used only in the meaning of "instance, occurrence".
 * The usage as "pilgrimage" or "festival" derives from a punning combination of the Biblical usage as "occurrence" and the standard usage as "leg" — interpreted as "a leg-occurrence" or a pilgrimage on foot.