The Collaborative International Dictionary
Jack-a-lent
Jack-a-lent \Jack"-a-lent\, n. A small stuffed puppet to be pelted in Lent; hence, a simple fellow.
Wiktionary
jack-a-lent
n. 1 (context obsolete English) A small stuffed puppet to be pelted in Lent. 2 (context obsolete by extension English) A simple fellow.