different between backstrap vs blackstrap

English

Etymology

back +? strap

Noun

backstrap (plural backstraps)

1. A pull strap extending the backstay of a boot or shoe.
2. The backbone of a book.
3. A loin of meat consisting of the muscle on each side of the spine.
4. An anchoring strap, passed around the waist or hips, for a small loom.
5. (firearms) The rearmost surface applied to the grip especially of a pistol below a possible beavertail.
6. (drugs) The rolling a marijuana cigarette in a certain fashion (clarification of this definition is needed)

   Synonym: backroll

   Antonym: frontstrap

Verb

backstrap (third-person singular simple present backstraps, present participle backstrapping, simple past and past participle backstrapped)

1. To apply or make into a backstrap.

References

• Webster's Third New International Dictionary, Unabridged. Merriam-Webster, 2002. http://unabridged.merriam-webster.com (17 Aug. 2011)
• Backstrap loom.

English

Etymology

black +? strap? Possible connection with Dutch stroop (“syrup”).

Pronunciation

Noun

blackstrap (uncountable)

1. The dark, viscous molasses remaining after maximum extraction of sugar from raw sugar cane, used in manufacturing and cattle feed.
2. (obsolete) A mixture of spirituous liquor (usually rum) and molasses.
   • 1845, Sylvester Judd, Margaret: A Tale of the Real and the Ideal, Blight and Bloom; Including Sketches of a Place Not Before Described, Called Mons Christi

     No blackstrap to-night; switchel, or ginger pop.

3. (obsolete, nautical, slang) Bad port wine; any common wine of the Mediterranean.