> as lemmas

1856 Brit. Almanac Compan. i. iii. 44 This Society,..has sought to assist in the establishing of life-boats and rocket-mortars at all the dangerous parts of our coast.

1945 Sat. Rev. Lit. (U.S.) 3 Nov. 7 The Screaming Meemie is a German multi-barreled rocket-mortar (so named for the sound it makes going off).

1998 R. G. Suny Soviet Exper. 313 New tanks were designed and built on the eve of the war, as well as a rocket mortar.