Bundle up is a phrase used to describe the act of putting on extra layers of clothing to stay warm in cold weather. The crossword solutions for this term are sheave (6 letters), ENWRAP (6 letters), WRAP (4 letters), SWATHE (6 letters), BALE (4 letters), DYNAMO (6 letters), PACKET (6 letters), and TRUSS (5 letters). Sheave is a pulley wheel with a grooved rim for holding a rope or cable. ENWRAP means to cover something completely. WRAP is to cover something with cloth or paper. SWATHE is to WRAP something tightly in cloth or bandages. BALE is a large bundle of hay, straw, or cotton. DYNAMO is an electric generator that produces direct current. PACKET is a small bundle or package. TRUSS is to tie or fasten securely.