Juvember

All of this work will take from now to Juvember!

[…] and that said section be further amended so as to include and make it unlawful for any person to use sling juvembers or other contrivance by which to throw or project rocks, pebbles, shot or other missiles.

Your issue of February, 1975 has a photo (see cut) and caption by Erwin D. Stephens describing this longish beanshooter as a "juvember." Please fill me in on the derivation of "juvember." At first glance it appears to be a synthetic word, a contraction of either June or July and either November or December.

The nuts were little round balls, hard as granite, and […] there was hardly any meat in them, so we mostly shot them in our "juvembers", (a kind of slingshot).