b 3 a 1 c 3 k 5 u 1 p 3
6 letters · 16 points in Scrabble
Meaning
noun an accumulation caused by clogging or a stoppage
noun someone who takes the place of another (as when things get dangerous or difficult)
noun a musical part (vocal or instrumental) that supports or provides background for other musical parts
originEtymology tree English back updeverb. English backup Deverbal from back up.
Etymology from Wiktionary, CC BY-SA 3.0