sidle

Short definition from Wiktionary

Verb

1. 1
   To (cause something to) move sideways.
2. 2
   In the intransitive sense often followed by up: to (cause something to) advance in a coy, furtive, or unobtrusive manner.

Noun

1. 1
   An act of sidling: A sideways movement.
2. 2
   An act of sidling: A furtive advance.

Proper noun

1. 1
   A surname.